Thank you for making this video! I started running 225/45/17s on a x9 wheel because I wanted to experiment, but your previous article and video helped reaffirm my decision. This video continues to reaffirm my decision as well. Keep up the great work and awesome content!
@@ehren-foleyincreasing wheel diameter increases contact patch, better for straight line acceleration. It is a trade off, wider wheels are better for lateral traction but larger wheels for better launches.
Which is what you would expect, the subjective discussion within the video not withstanding. Admittedly the delta between 225 and 245 slightly less than I might have guessed.
Yeah, but with someone who tracks occasionally, I would be far faster with additional sure footedness of the 225 on 9”. When I do track days for a living, I’ll change my approach 😂
Makes Sense Narrow Tire (relative to the application here) on wider Wheel, maintains tension in the side wall & a stronger contact patch, where the opposite happens with wide tire, on narrow wheel - leaves more squish , affirmed in the subject description from the tests. Great Work & info! 💪👏
Excellent data. Thanks for the effort to answer common questions and ideas. Keep it up. Agree with idea about a video about staggered (RWD AND FWD spec).
Thanks for doing this test. You guys basically have my autocross setup on these cars. Can you do a coil over vs koni and springs test? I know this test is helping ppl figure out what to buy.
It's important to add, tyre sidewall stiffness will be an important factor here. A softer one will benefit more using a wider rim, with a stiffer you might simply miss this effect.
@@Iseenoobpeoples I have a GR86 runningRE71-RS at the track. I run 31 psi cold and aim for 35-36 on track. It seems high but the melted tread starts right at the triangle. I know it’s debatable if that’s decent metric, but others with one of the twins seem to find the same pressures work. Of course colder weather coming I may have to adjust.
What was the objective tread wear at the end of the test (measured tread depth AND tire weight)? What was the subjective tread appearance? What is the predicted longevity of these combinations?
Thanks for this test! One of the reasons I like Tire Rack so much is that there are few other sources of actual, measured data on tires. However, I'd like to point out that this test was conducted on relatively light cars, and I can't help but wonder if you'd see the same trend on heavier cars (such as a Charger, Challenger, Camaro, or Mustang). I feel like on heavier cars, the overall grip from a wider tire (on a given wheel width) may tend to outweigh the penalty you pay in reduced responsiveness. I'd love to see you run a similar test using the 8" wide base wheel of a S550 Mustang GT or Challenger R/T and compare a 225 width tire on that car to a 245 or 255. (Since Ford and Dodge seem insistent on saddling their lower trims with standard wheels that are only 8" wide.)
Wouldn’t really be relevant as this was a track test. I’ve been to 7 track days this year, saw 2 challengers, one was a hellcat that went into the tires after 2 laps. The other was a guy that actually knew what he was doing and it did decent. But a novice like me could keep up with him in his scat pack. Straight line cars are fun and I have no issues with them, but don’t confuse them with road track cars like a BRZ. For example, the Mach 1 is a very capable track car with 305 and 315’s. I know it cliche, but the lower trims are straight line cars at best, maybe the Camaro 1LE with the turbo 4 was decent lower trim, but that’s about all I can think of. In a straight line, wider is always better in the rear, steering response and sure footedness is less important than straight up grip when going straight. Even the setting on the car are different, I run -3 degrees camber on my track car, that would be stupid in a drag car.
Tire size can also affect the suspension geometry of the car. If the suspension geometry of the car was optimized for a certain tire width, then it will work well for that size. Wider tires won't automatically mean better handling.
So, go for 235 if you want a balance of straight line speed and cornering. And like they said, wider tires don't always mean better cornering. They can only be effective if you decrease their sidewall by putting a larger wheel
Thanks, these tire and wheels tests are always interesting to see. How did the raw lap times look, did any combinations seem more consistent than the others? Was there any back-to-baseline or A-B-A testing to account for the drivers learning the course and posting better times later in the day?
Woah but isn't a 225 on a 9" wheel extremely stretched?? I wonder if that's even safe to track on a regular basis. It's interesting that stretched is performing just as good as the optimal width size for a 9" wheel. I would have imagined the optimal wheel to tire size would have felt better. hmm
Modern fast tires are so much wider than a typical tire in the same spec that they aren't actually that stretched. 225 on 9J has been common among Miatas for a fairly long time.
It’s not extremely stretched, it actually looks pretty natural to me, the rim on the wheel isn’t poking out or anything like you see with some stance cars
You guys rawk ! For the next "major" R&D effort, it would be awesome to see the same test performed on an AWD vehicle (and perhaps 225, 245, 265 options, given the current general tire sizes for the current. more powerful, AWD vehicle offerings). Thank you for answering the difficult questions with empirical data
i would love to see 235 tires tested as my stock size currently on my 09 cts is 235/55/17 also does tire height make a difference cause your test tires are 40 and 45 and im curious to see my 55 height on a track and if it does bad or good
I went with 255 RE-71R on a 9.5in wheel, also, clutch pack differential, high capacity coilovers, modified geometry, etc. it consistently pulls 1.65g's with peaks around 2.2g's. It's great, most 100k$+ cars can't do that.
@@jrfish007 I think any aftermarket brand will be a huge improvement over OEM, I went with the Cusco Type RS setup fairly tight, coilovers are Cusco Zero-3 with custom spring rate and valving.
Great tests keep ‘em coming! Would be nice to compare lap time drop off over a 20 minute session as the tires get hot. I would expect the wider tire to perform better in terms of lap time and with less wear. Also does this track include heavy braking zones? My experience after a couple of hot laps and tires get hot braking performance can drop off significantly requiring altered braking points to stay on the track for smaller tires. I also wonder how much the tire’s sidewall stiffness effects the results? I suspect you might get improved performance with a wider tire on small wheels if the tire has a stiffer sidewall. Finally would be nice if the tire companies would share normalized max lateral force vs wheel width. Not as good as a track test but I’d still be interested in the trend.
One more thing to consider is also the power limitations of the car. It takes more energy to rotate wider tyres than thinner ones. So 245 getting worse results could be because of the lack of power. In day to day drive fuel efficiency could also become a factor.
I would love to see regular shootouts, whether annual, biannual, or just any time a new tire comes out, to do a sort of shootout with them. That way, as we consumers read the Wet, Dry, Comfort, Grip charts, we have a solid foundation of comparative information.
Interesting test but some key information is missing. Was the same pressure used for all sets? Is the ET value the same for the 8 and 9 inch rims, if so the track width of the 9 inch rims is and inch wider which increases handling in the corners significantly which would partially explain why both 9 inch sets where the fastest but with different handling characteristics.
I’m putting together a 69 Camaro that I’ll drag race and road race. On my previous 67 Camaro I did both I had some 305 on back and 275 up front for rr and it worked very well. I’m not going to cut up the factory fenders and do flares as I did on the 67, with this 69 so I’ve got 245/18 up front and 275/18 out back and it looks ridiculously under tired but they fit inside the fenders. Wishing I’d just of done a square setup for rr with 275 all around. I guess we’ll see what it does at the track come November with 1000 hp bbc/sc pushing it around😮
Im right in the middle with a 235 on a 8" wheel. Would go with a 225 for the bettwr support but need all the width I can fit for straight line traction, not just corners. Where the widest tire does the best job
Taller tire size puts power down better than a shorter size e.g. a 235/45 will put power down better than identical tire in a 235/35. Watch how tall the rear tires grow on a top fuel dragster.
How many are blowing engines? I’ve been to 7 track days this year and every track day has at least 5 of these and not one of them have blown up yet. Not trying to say it isn’t an issue, just curious what the real number of failures are versus the number of people that track these.
@@jrfish007 I don't have any hard data, but plenty of first hand accounts and videos on youtube. Some have excessive RTV in the pan from the factory and it gets caught in the pickup. They also ALL drop oil pressure significantly in hard right-hand corners. As low as 20 PSI. Whether or not that kills the engine depends on duration and engine rpm.
This test is under certain conditions and turns. Tight slow turns favor narrower tires on wider rims. The one comment was the 245 on 9 inch rims had an advantage on slower high speed turns. What if all the turns were over 100 mph? Would the 245 tires win in alll categories then?
Was the track width affected with wider wheels? You didn't say anything about offset of those wheels. Incorrect wheel offset can change results of lap times.
Ok input for other commentors.. i have 215/55/17 currently on 7" rim(factory). I was thinking of going to 235/50/17 as the tiresize site says they come out ot be very identical with stock being like 767 rvm and new option being like 797 or something like that. Speed shpuld stay the same, height is the same etc. Do you think i will have any response issue or habdling issue? 2012 camry xle but im wanting to put a strut bar on it to help with cornering as i do take this car around corners spiritually most days.. i cant do any coilovers as my driveway sucks.. so strut bar might give me more of a sturdy turning ride. Car also only has 98k miles( i got it last week od dec last year at 88500 miles). Thanks for anyones imput!
Can you do an experiment on 18 inch wheels as well? I'm not much of a track guy, but I absolutely love the look of my eighteenth and I'd like to know which tire combination with eighteen's is faster
@tirerack thanks! I have a trd handling package 86 and it came with 18s. I plan on tracking it every here and there but its my daily. I know that the 17s are faster but especially for the first gen 86, the 18s just look better and when I get new wheels I'd like to know which is better for when I do some track days and what-not. As for cosmetically, 18x9 looks the best but I don't wanna go too wide on tire because I don't want to lose my steering feel and no forums say anything about 18s all that much
I'm trying to make sense out of this video, since I'm used to cm and mm instead of inches or football pitches laid end to end. You already give the tire sizes in millimeters so I wonder why you could not just say that the rims are 20.32cm (8 inches) or 22.86cm (9inches) wide to avoid confusion. We don't all live in the US so there is a problem understanding your videos.
I run these tires on a GR86 at the track, if these are on my car and it’s raining I won’t go out. If rain is forecast, I keep the PS 4S’s on and forgo the RE61-RS’s.
@@yuhwaeri9080 Yes, search for tire size wheel chart in Google image, also just by the look of it 225 is too small for 9, you can put 265 on the same wheel (maximum size).
Thank you for contacting us. The rim width range for this tire size is 8.50 to 10.00, so either size will work for your needs. Can you please provide more information about the specific goal you are trying to achieve by changing the wheel width?
@@tirerack Mostly I just want the performance and better mpg if possible. I purchased lightweight wheels and tires which are less weight than my current oem wheel setup that saves me nearly 15lbs per wheel.
Doing this test on a BRZ is flawed because _they don't produce enough HP to need_ the grip. Take a 911 and put it on skinnier tires and rims and watch it go slower.
I go to the track all the time. I see at least a dozen GR86/BRZs everytime I’m at the track and only seen one leave on a flat bed, motor wasn’t the issue 😂. Just run 5w30 and overfill by half a quart. Last track day I ran into a guy that had one since they came out, over 50 track days and no issues with it. If you don’t mess with the engine, it has a 60k mile warranty. I can AAA tow it away from the track if needed. The oil issue is a real thing, but very hyped up. Someone is going to make a bunch money when they figure it out 😂
@@jrfish007 0W40 is probably even better and a baffle inside the oil tank, the pick-up tube also had to be upgraded on the old gen, multiple things can be done preventively.
Honestly, we excluded the 235 to keep the total number of specs to a somewhat manageable number. We wanted to see the incremental change between the 215 and 225, and then take a slightly bigger jump up to the 245.
Muscle car guys put S rated tires, like 255 on 7" wheels, and they drive like crap. Feel like theres a flat tire even on straightaways. But they think the fat tire looks and hooks good. LOL LOL smh
This is definitely not correct.... you have to use the same car, same air pressure,etc.... of course using different cars are going to give you data that you can use.Bro please make it right!!!!!!
The fastest combination is only, ONLY 0.5% faster than the slowest one... ...basically, ALL the times are the "same" considering that there is no driver that would make the same time twice with absolutely identical car, tires, weather, pavement condition... etc. Otherwise, great video 🙂
Half a second is pretty notable on the track, especially when power, suspension, tire, and driver are identical. A supercharger would probably only pull off like 3 seconds.
@boost331 That's an interesting perspective, 105.96 seconds vs 105.33 seconds. The quickest lap is less than one percent improvement over the slowest lap. I wonder how these combinations would look in tests that take the driver out of the equation, such as sustained cornering speed around a skidpad or 60-0 braking times.
@@ehren-foley That may be true. But that isnt real racing either. 90% of autocross races you get to 2nd gear and just leave it there and try to follow a decent line. Its not like racing on a full circuit where there are multiple gear changes up and down. One shift that was not as good as the rest can cost a half second on its own.
Thank you for making this video! I started running 225/45/17s on a x9 wheel because I wanted to experiment, but your previous article and video helped reaffirm my decision. This video continues to reaffirm my decision as well.
Keep up the great work and awesome content!
Thank you for sharing your thoughts with us. We are happy to hear you enjoyed the video!
Nice comparison! Would love to see the difference between 17" and 18" wheels on track.
Thank you for sharing your thoughts with us.
18s will be heavier and slower, especially on low-powered car. And the tires will cost more. 17s if you can fit them!
@@ehren-foley if you consider tire weights its usually negligible (weight wise), but shorter sidewall should flex less
@@ehren-foley18s if you can fit 265 or bigger.
@@ehren-foleyincreasing wheel diameter increases contact patch, better for straight line acceleration. It is a trade off, wider wheels are better for lateral traction but larger wheels for better launches.
It’s worth mentioning that the 245 on the 9” wide actually had the fastest outright time for a single lap in your previous take. Awesome video
Which is what you would expect, the subjective discussion within the video not withstanding. Admittedly the delta between 225 and 245 slightly less than I might have guessed.
Yeah, but with someone who tracks occasionally, I would be far faster with additional sure footedness of the 225 on 9”. When I do track days for a living, I’ll change my approach 😂
Makes Sense Narrow Tire (relative to the application here) on wider Wheel, maintains tension in the side wall & a stronger contact patch, where the opposite happens with wide tire, on narrow wheel - leaves more squish , affirmed in the subject description from the tests. Great Work & info! 💪👏
Excellent data. Thanks for the effort to answer common questions and ideas.
Keep it up. Agree with idea about a video about staggered (RWD AND FWD spec).
Excellent work TR, I completely agree. My autocross 245/40s on 8" wheel feel numb and dull compared to 255/35s on 9.5"
Thanks for doing this test. You guys basically have my autocross setup on these cars. Can you do a coil over vs koni and springs test? I know this test is helping ppl figure out what to buy.
We appreciate your feedback and will share it with our team.
Great video! Would love to see the different between 18in and 17in wheels with these tires on a fwd vehicle.
It's important to add, tyre sidewall stiffness will be an important factor here. A softer one will benefit more using a wider rim, with a stiffer you might simply miss this effect.
The tires in this test feel like a pretty soft sidewall for a competition tire. I can really feel them moving under me on my car.
Thank you for sharing your thoughts with us.
@@ruleslawyer That would be strange because the RE-71R was fairly stiff, didn't try the RS yet, what pressures (psi) are you running in them?
@@Iseenoobpeoples I have a GR86 runningRE71-RS at the track. I run 31 psi cold and aim for 35-36 on track. It seems high but the melted tread starts right at the triangle. I know it’s debatable if that’s decent metric, but others with one of the twins seem to find the same pressures work. Of course colder weather coming I may have to adjust.
@@jrfish007 Do you share the same thought as the guy above regarding the sidewalls? Are they different from the RE-71R?
Try square vs staggered on RWD as well as square vs reverse staggered on FWD..
Thank you for sharing your thoughts with us.
What was the objective tread wear at the end of the test (measured tread depth AND tire weight)?
What was the subjective tread appearance?
What is the predicted longevity of these combinations?
Thanks for this test! One of the reasons I like Tire Rack so much is that there are few other sources of actual, measured data on tires. However, I'd like to point out that this test was conducted on relatively light cars, and I can't help but wonder if you'd see the same trend on heavier cars (such as a Charger, Challenger, Camaro, or Mustang). I feel like on heavier cars, the overall grip from a wider tire (on a given wheel width) may tend to outweigh the penalty you pay in reduced responsiveness. I'd love to see you run a similar test using the 8" wide base wheel of a S550 Mustang GT or Challenger R/T and compare a 225 width tire on that car to a 245 or 255. (Since Ford and Dodge seem insistent on saddling their lower trims with standard wheels that are only 8" wide.)
Wouldn’t really be relevant as this was a track test. I’ve been to 7 track days this year, saw 2 challengers, one was a hellcat that went into the tires after 2 laps. The other was a guy that actually knew what he was doing and it did decent. But a novice like me could keep up with him in his scat pack. Straight line cars are fun and I have no issues with them, but don’t confuse them with road track cars like a BRZ. For example, the Mach 1 is a very capable track car with 305 and 315’s. I know it cliche, but the lower trims are straight line cars at best, maybe the Camaro 1LE with the turbo 4 was decent lower trim, but that’s about all I can think of.
In a straight line, wider is always better in the rear, steering response and sure footedness is less important than straight up grip when going straight. Even the setting on the car are different, I run -3 degrees camber on my track car, that would be stupid in a drag car.
Great content! Thanks for putting so much effort in this as it helps to educate a lot of drivers out there to choose the right tire size. 👍
Thank you for your kind words and support!
Still want to know what the lap time would be after a 20 min session
Tire size can also affect the suspension geometry of the car. If the suspension geometry of the car was optimized for a certain tire width, then it will work well for that size. Wider tires won't automatically mean better handling.
So, go for 235 if you want a balance of straight line speed and cornering.
And like they said, wider tires don't always mean better cornering. They can only be effective if you decrease their sidewall by putting a larger wheel
Thank you for the content!
Thanks, these tire and wheels tests are always interesting to see. How did the raw lap times look, did any combinations seem more consistent than the others? Was there any back-to-baseline or A-B-A testing to account for the drivers learning the course and posting better times later in the day?
Awesome testing. Thank you!
Thank you for your kind words and support!
Woah but isn't a 225 on a 9" wheel extremely stretched?? I wonder if that's even safe to track on a regular basis. It's interesting that stretched is performing just as good as the optimal width size for a 9" wheel. I would have imagined the optimal wheel to tire size would have felt better. hmm
Modern fast tires are so much wider than a typical tire in the same spec that they aren't actually that stretched. 225 on 9J has been common among Miatas for a fairly long time.
It’s not extremely stretched, it actually looks pretty natural to me, the rim on the wheel isn’t poking out or anything like you see with some stance cars
Great video... The difference between all 4 combinations is ONLY a Half a Percentage !!!
You guys rawk ! For the next "major" R&D effort, it would be awesome to see the same test performed on an AWD vehicle (and perhaps 225, 245, 265 options, given the current general tire sizes for the current. more powerful, AWD vehicle offerings). Thank you for answering the difficult questions with empirical data
Thanks for this valuable test. Can you test heavy wheels vs light wheels at some point?
Again Thanks
Thank you for sharing your thoughts with us. We would be happy to share your wheel testing idea with our team.
i would love to see 235 tires tested as my stock size currently on my 09 cts is 235/55/17 also does tire height make a difference cause your test tires are 40 and 45 and im curious to see my 55 height on a track and if it does bad or good
I went with 255 RE-71R on a 9.5in wheel, also, clutch pack differential, high capacity coilovers, modified geometry, etc. it consistently pulls 1.65g's with peaks around 2.2g's. It's great, most 100k$+ cars can't do that.
What differential pack and coil over did you go to? I’ve been looking at the diff as it has been not exactly what I’m looking for on track.
@@jrfish007 I think any aftermarket brand will be a huge improvement over OEM, I went with the Cusco Type RS setup fairly tight, coilovers are Cusco Zero-3 with custom spring rate and valving.
Great tests keep ‘em coming! Would be nice to compare lap time drop off over a 20 minute session as the tires get hot. I would expect the wider tire to perform better in terms of lap time and with less wear. Also does this track include heavy braking zones? My experience after a couple of hot laps and tires get hot braking performance can drop off significantly requiring altered braking points to stay on the track for smaller tires. I also wonder how much the tire’s sidewall stiffness effects the results? I suspect you might get improved performance with a wider tire on small wheels if the tire has a stiffer sidewall. Finally would be nice if the tire companies would share normalized max lateral force vs wheel width. Not as good as a track test but I’d still be interested in the trend.
Exactly. Just posted this before reading your comment.
Can we address tire pressure? Many who pinch wider tires air up differently than the door-placard pressures and have good success.
I was wondering what the comparison would be between 17x8 and 17x9 on a 235?
One more thing to consider is also the power limitations of the car. It takes more energy to rotate wider tyres than thinner ones. So 245 getting worse results could be because of the lack of power. In day to day drive fuel efficiency could also become a factor.
I would love to see regular shootouts, whether annual, biannual, or just any time a new tire comes out, to do a sort of shootout with them. That way, as we consumers read the Wet, Dry, Comfort, Grip charts, we have a solid foundation of comparative information.
Exactly what I found too on my ND Miata with 7" on 205 vs 215. Much prefer the 205, just felt more playful and fun what the Miata should be.
Thanks for running this test! Interesting results.
We are so happy to hear you enjoyed the video!
What do you think about putting 235/45R18 tires and 7.5" wheels on a GR86?
I really enjoyed watching it from start to finish.
Thank you for your kind words!
Depends on weight of the car. A wider tire wont stick with a light tire
Interesting test but some key information is missing. Was the same pressure used for all sets? Is the ET value the same for the 8 and 9 inch rims, if so the track width of the 9 inch rims is and inch wider which increases handling in the corners significantly which would partially explain why both 9 inch sets where the fastest but with different handling characteristics.
Great comment, I hope they answer.
Cool information 😎
I own 2014 infiniti qx80 and changed the tire size from 275/50R22 to 305/45R22
Thank you for sharing your thoughts and experience with us.
I’m putting together a 69 Camaro that I’ll drag race and road race. On my previous 67 Camaro I did both I had some 305 on back and 275 up front for rr and it worked very well. I’m not going to cut up the factory fenders and do flares as I did on the 67, with this 69 so I’ve got 245/18 up front and 275/18 out back and it looks ridiculously under tired but they fit inside the fenders. Wishing I’d just of done a square setup for rr with 275 all around. I guess we’ll see what it does at the track come November with 1000 hp bbc/sc pushing it around😮
when is the 2024 version coming out?
Wheel offset makes a huge difference aswell
Im right in the middle with a 235 on a 8" wheel. Would go with a 225 for the bettwr support but need all the width I can fit for straight line traction, not just corners. Where the widest tire does the best job
Taller tire size puts power down better than a shorter size e.g. a 235/45 will put power down better than identical tire in a 235/35. Watch how tall the rear tires grow on a top fuel dragster.
Was it possible for the driver to determine what size tire he was on?
Can you test on which wheel combination would provide the most comfort in 20 inch wheels. Hard to find 20's that don't ride like crap.
What's the backspace on the wheels?
Teach me more...traction + rpm = speed. From great tire / wheel combination
You may also want to add an oil reservoir or dry sump system to your BRZs to maintain oil pressure in corners. Plenty of these blowing engines.
How many are blowing engines? I’ve been to 7 track days this year and every track day has at least 5 of these and not one of them have blown up yet. Not trying to say it isn’t an issue, just curious what the real number of failures are versus the number of people that track these.
@@jrfish007 I don't have any hard data, but plenty of first hand accounts and videos on youtube. Some have excessive RTV in the pan from the factory and it gets caught in the pickup. They also ALL drop oil pressure significantly in hard right-hand corners. As low as 20 PSI. Whether or not that kills the engine depends on duration and engine rpm.
This test is under certain conditions and turns. Tight slow turns favor narrower tires on wider rims. The one comment was the 245 on 9 inch rims had an advantage on slower high speed turns. What if all the turns were over 100 mph? Would the 245 tires win in alll categories then?
Now since you used several cars what are the times of each car with all of them having the same wheels and tires?
Was the track width affected with wider wheels? You didn't say anything about offset of those wheels. Incorrect wheel offset can change results of lap times.
Next video on 18 inch tyres 235 40 18 vs 245 40 18 vs 255 40 18 pls
We will share your feedback with our tire testing team!
I wish you measured also stopping distance from a certain speed. It would give a better overall picture than just a lap time.
Thank you for sharing your feedback with us.
Can you fix some drag racing rules about tire soft hard slic Im racing a 2 door Chevrolet Caprice
What this really shows is, get widest wheels possible then add streched tyre width to it
Ok input for other commentors.. i have 215/55/17 currently on 7" rim(factory). I was thinking of going to 235/50/17 as the tiresize site says they come out ot be very identical with stock being like 767 rvm and new option being like 797 or something like that. Speed shpuld stay the same, height is the same etc. Do you think i will have any response issue or habdling issue? 2012 camry xle but im wanting to put a strut bar on it to help with cornering as i do take this car around corners spiritually most days.. i cant do any coilovers as my driveway sucks.. so strut bar might give me more of a sturdy turning ride. Car also only has 98k miles( i got it last week od dec last year at 88500 miles). Thanks for anyones imput!
Can you do an experiment on 18 inch wheels as well? I'm not much of a track guy, but I absolutely love the look of my eighteenth and I'd like to know which tire combination with eighteen's is faster
Thank you for your feedback. We will share your thoughts with our team.
@tirerack thanks! I have a trd handling package 86 and it came with 18s. I plan on tracking it every here and there but its my daily. I know that the 17s are faster but especially for the first gen 86, the 18s just look better and when I get new wheels I'd like to know which is better for when I do some track days and what-not. As for cosmetically, 18x9 looks the best but I don't wanna go too wide on tire because I don't want to lose my steering feel and no forums say anything about 18s all that much
What J would the pros at tirerack suggest for 295/35/18?
I think at that point, you look at other factors like weight and price. On an N/A BRZ, you'd run the 225.
You should’ve tested stopping distance
Nothing beats a Ed weather report
Matt's Offroad Recovery is >>>> that way
Does 245 on 9" fit brz? I wonder if 245 on 9" will make clearance issuses with oe struts.
What offset wheels did you use? I'm surprised you managed to fit a 245mm tire on there with -2.0 deg camber and didn't have strut clearance issues.
All the wheels in the test have a 45mm offset, and we used 15mm spacers with all specs to keep the tires from contacting the spring perch.
currently running 255s on a 9.5in wheel. maybe next time I need tires I try 245s and see if that little bit of stretch matters 🤔
I run the same setup, it's amazing on the track with the right supporting mods.
A 255/35 should be a little streched. Atleast my 18s are
switching from a stock 225 17 all 4 to a 235 17 all 4 made a big difference in traction on my front wheel drive monte carlo v6 2007(jollopy) LOL
Thank you for sharing your experience with us.
Did I miss the offset on these wheels? Looking to set this up for my track tires.
The 17x9 wheels are a 45mm offset.
I'm trying to make sense out of this video, since I'm used to cm and mm instead of inches or football pitches laid end to end. You already give the tire sizes in millimeters so I wonder why you could not just say that the rims are 20.32cm (8 inches) or 22.86cm (9inches) wide to avoid confusion. We don't all live in the US so there is a problem understanding your videos.
What about a 235 comparison?
Awesome info and video. Now do one in the wet!
Thank you for your feedback.
I run these tires on a GR86 at the track, if these are on my car and it’s raining I won’t go out. If rain is forecast, I keep the PS 4S’s on and forgo the RE61-RS’s.
d’ya have 225 on 19” sized wheel test?
thanks 🙏
Thank you for reaching out. We have not tested 225 on 19" wheels but we will share your comment with our tire testing team.
What are your thoughts on a 235 (yes tire choices are less ) tire on a 9” wheel ? If the trend continues it should be the fastest.
235 is the minimum tire size for 9”, it does work, I'm running 255 on 9.5”, it's amazing with other mods, above that it's going to rub.
@@Iseenoobpeoples did you just comment 235 is the minimum for 9" in a video that tests 225 on a 9"?
@@yuhwaeri9080 Yes, search for tire size wheel chart in Google image, also just by the look of it 225 is too small for 9, you can put 265 on the same wheel (maximum size).
What is the best size wheel for 255/40/19 - 8.5" or 9.5"?
Thank you for contacting us. The rim width range for this tire size is 8.50 to 10.00, so either size will work for your needs. Can you please provide more information about the specific goal you are trying to achieve by changing the wheel width?
@@tirerack Mostly I just want the performance and better mpg if possible. I purchased lightweight wheels and tires which are less weight than my current oem wheel setup that saves me nearly 15lbs per wheel.
The 245/40 was 1lb heavier than the 225/45 as well.
With my fwd car, my rims is 7.5 width be fit 235/4/18 tire? Thanks.
Very nice content 👍
Thank you!
Staggered? Best of both worlds
The issue is that a 245 tire is probably too much tire for that light of a car.
Doing this test on a BRZ is flawed because _they don't produce enough HP to need_ the grip.
Take a 911 and put it on skinnier tires and rims and watch it go slower.
Out of all the combinations, what did the drivers actually prefer? What experience gave them the most satisfaction?
Red white and blue cars! Merica’!
now I can have just 1 set of wheels
i wanna see 16 vs 17 vs 18
I cringe everytime you show the car making right hand turns.
Lol
super underrated comment
I suppose i'm not the only one waiting to see the results of the next 900brz video on the new prototype oil baffle by Verus engineering 😂
Meh, I tracked my GR86 last weekend, all 8 of us with the FA24 all drove home.
@@marcodifabio5979lol same. Although I’m mixed on it, I can almost bet if you put that in Toyota will try to void your engine warranty.
What wheel offsets were used?
The 17x9 wheels are a 45mm offset.
@@tirerack spacers on the front or no?
We had to use a 5mm spacer to keep the tires from rubbing on the spring perch.
why no 235/40 or 235/45?
are you guys worried about the oil starvation issues when tracking these BRZs?
what are your tires and experience level?
I go to the track all the time. I see at least a dozen GR86/BRZs everytime I’m at the track and only seen one leave on a flat bed, motor wasn’t the issue 😂. Just run 5w30 and overfill by half a quart. Last track day I ran into a guy that had one since they came out, over 50 track days and no issues with it. If you don’t mess with the engine, it has a 60k mile warranty. I can AAA tow it away from the track if needed.
The oil issue is a real thing, but very hyped up. Someone is going to make a bunch money when they figure it out 😂
@@jrfish007 0W40 is probably even better and a baffle inside the oil tank, the pick-up tube also had to be upgraded on the old gen, multiple things can be done preventively.
maybe the 245 needed suspension tunning
They were only running -2 camber. I don't have a BRZ, but that's not a lot for the track.
Thank you for sharing your thoughts with us.
gotta show us the full fastest laps side by side. not just tell us like a podcast. otherwise great info
Where the hell is 7inch
WIDERRRRRRRRRRRRRR!!!
im leaving bc youre showing me a brz.
need a 235 in there
Honestly, we excluded the 235 to keep the total number of specs to a somewhat manageable number. We wanted to see the incremental change between the 215 and 225, and then take a slightly bigger jump up to the 245.
Muscle car guys put S rated tires, like 255 on 7" wheels, and they drive like crap. Feel like theres a flat tire even on straightaways.
But they think the fat tire looks and hooks good.
LOL LOL smh
This test seems largely irrelevant to most consumers. Why not do a test that demonstrates the impact of tire/wheel size impact on fuel economy?
This is definitely not correct....
you have to use the same car, same air pressure,etc.... of course using different cars are going to give you data that you can use.Bro please make it right!!!!!!
I did a similar test for another tire:
th-cam.com/video/W_Lq8HtHNWY/w-d-xo.html
Too many other variables.
2* negative.
No good for a street driven car.
The fastest combination is only, ONLY 0.5% faster than the slowest one...
...basically, ALL the times are the "same" considering that there is no driver that would make the same time twice with absolutely identical car, tires, weather, pavement condition... etc. Otherwise, great video 🙂
Thank you for sharing your thoughts with us.
We are talking about a half second here and there. I call it a wash.
Half a second is pretty notable on the track, especially when power, suspension, tire, and driver are identical. A supercharger would probably only pull off like 3 seconds.
@boost331 That's an interesting perspective, 105.96 seconds vs 105.33 seconds. The quickest lap is less than one percent improvement over the slowest lap. I wonder how these combinations would look in tests that take the driver out of the equation, such as sustained cornering speed around a skidpad or 60-0 braking times.
Its a competition tire. half a second a lap is a ton just on tire size.
Said no autocrosser ever.
@@ehren-foley That may be true. But that isnt real racing either. 90% of autocross races you get to 2nd gear and just leave it there and try to follow a decent line. Its not like racing on a full circuit where there are multiple gear changes up and down. One shift that was not as good as the rest can cost a half second on its own.