As I understand, the reason cars are shipped from the factory with higher air pressure is to avoid, or at least reduce, deformation of the tires after long periods parked. It takes weeks from the time the car is manufactured to the time the customer takes ownership. This was more noticeable before covid craziness when cars would take weeks and even months parked at the dealership before they were sold. The dealership is supposed to set the correct PSI before they deliver the car to the new owner.
My sweet spot is 27.5 PSI with BFG K02 285/60/18, D Load. OME Shocks & Medium Duty Springs, 2” Lift. 65,000 miles on the tires and still tread left. Zero accessories except a significantly lighter Magnaflow exhaust and lighter wheels. Smooth and silk (kinda). Mostly drive round in circles in Manhattan and Brooklyn with occasional highway and off road ventures. My mechanic will sometimes return the car with 32PSI. My teeth and brain start to rattle, more than usual. Incredible difference with only a 3-4PSI change. Great vid as always!
Born & raised. NYC is back in full swing for sure. We now have super gentrification. The poor millionaire finance bros who gentrified Brooklyn and The Village are now being pushed out by billionaires teenaged children driving McLarens and Mercedes G Square’s. Actually. 🍿
What brand gauge do you use my guy? I'm using the brass Slime brand one but it doesn't have a hose. I'm considering buying the Joe's Racing one as it's highly rated. I got scammed buying a fake "AstroAI" one on Amazon which wasn't accurate and I had a cheap digital "Michelin" digital gauge I brought from Ross that wasn't accurate either. Aviation Gauges are the best but are extremely expensive. They come with an official certificate of calibration that actually means something. I tend to like exactly 31psi cold on my GX as I feel it absorbs bumps better as we have horrible roads in the greater St. Louis Missouri area for the most part.
Thanks for the rationale. The notorious PSO question. I had mentioned in another video of yours. I put new tires on my new to me GX460. They were a more all terrain tire bit same size as stock. I put my PDInat 32. It rides like a "Lexus" Someone tried to tell me the ftint tired looked low. They are at 32 PSI. "Well I'd bump them up" ok thanks but good. Once again thanks for the intelligent common sense view
lol.. ya... we have another on improper tire PSI (overinflation habbits and "airing down for comfor" myth) coming later this week... off the lot the dealer had them at like 45 psi cold 😆
I have a 2016 GX with only a rack and KO2 265 65 18 tires, after performing a chalk test multiple times, the ideal tire pressure is 45 PSI. At 35 PSI like you suggest, fails the chalk test.
Best pressure is 32 psi. Airing down will lengthen tread footprint for more traction... it will not make the ride more comfortable... that is a mythological misconception
Just keep in mind that I think LT tires need more pressure than a comparable P rated tire to keep the same load rating. A guide I saw showed that for a suv or pickup tire rated at 35 psi would need 45 psi in an LT tire to maintain the same capacity.
Thanks for this. I just put the wikdpeaks on my new GX and the shop overinflated the tires to 37 psi. They said it was set higher because it’s cold out…Going to lower it tomorrow.
Just had Falken Wildpeak AT3Ws installed at Discount Tire per your recommendation from your video comparing KO2s to Wildpeaks.They inflated them to 42PSI 😮😮😮 Aired them down to 32 when I got home. I wonder why they do that?
Please help me out sir I really respect your opinion I become a recent subscriber. Can you please tell me what lightweight bumper you would recommend. I'm leaning towards aluminum and my off-roading will be to a minimum but I do want to have a winch. And if I do that do I stay with the regular front shocks and if not what do you recommend. Other than that I'm not going to do any rails at this time or underneath skid plates.. I appreciate your opinion.. thank you very much.. and after watching this video I went checked my new tires which are all season and they have 36 PSI so I'm going to do the recommended psi by you and Lexus. I have a 2015 GX 460 with 71000 mi I live up by lake Tahoe in the snow country here in California. So most of my driving will be Street and snow. And I do admire your off-roading and tell it like it is attitude. And you're helpful with your knowledge and I appreciate that.
Interesting - in the NE - when i get in the GX it will say 31 or so. After driving 5 or more miles i observed they are now a mix of 36 and 37. If the ideal PSI is 32 then we would need to start off at a lower point.
No you have it correct, 32 psi COLD. As you drive the air will heat up and expand 3-5 psi. This is normal and the engineers always account for this which is why they specify to set the pressure cold/moringing time 😃
Yes. The sticker psi is the propert psi designated by a team of experienced automotive engineers. Set it to 32 psi cold. You will notice a difference, you are 6 psi over inflated... it doesn't take much to induce the basketball effect 😀
@Bill Balleza No. Some people did tests online and higher psi for mpgs has been pretty much disproven. Modern cars are already under govt pressure to get the highest mpgs. Higher psi will simply make the ride worse... the exception to this is to account for extra vehicle weight/load...
I went from a stock P265 / 60 R18 OEM tire on a 2022 GX 460 to a BF Goodrich Ko2 LT265 /60 R18. Note went from a P ( passenger ) tire to a LT ( Light Truck ) tire , still the same OEM size, Stock GX 460 does that change the tire pressure ?? Thank you.
we have the same ko2 tires. If I didn't have the aftermarket junk on it I would have them at 32 psi/stock. Only reason we are at 34/35 is because of the added weight from the skids
@@LexusGX460-OFF-ROAD Okay, I had them at 34 PSI will try 32 PSI, When I purchased the KO2's at Discount tire last month , they had them at 40 PSI which they agued was correct for my GX 460, after the drive home and reducing the pressure to 34 PSI , Much better ride. Thank you. Enjoy your Videos.
To say you should use the pressure on the doorjamb all the time on and off road is ridiculous. The tire itself has a pressure range. The amount of pressure needed is determined by the amount weight applied to the tire and the rating of the tire. The only way to determine the best on-road pressure is the chalk test. You may find that each tire could require a different pressure. Also many people (like me) use “E” rated tires and you certainly would not use the doorjamb pressures on a tire's max rated of 80 psi. For off-road you would only use the doorjamb ratings if you are on dirt trails like in this video (you could drive a passenger car using on-road tires). If you are on a trail that has rocks and/or sand you certainly do not want use 30+ psi. If you are using factory pressures on a rocky trail you take the chance puncturing the tire and will have limited traction. If you are in a sandy environment (sandy trails/dunes) you certainly will not get far unless you air down. Again, to tell people you can go anywhere using OEM tire pressures is RIDICULOUS!
As I understand, the reason cars are shipped from the factory with higher air pressure is to avoid, or at least reduce, deformation of the tires after long periods parked. It takes weeks from the time the car is manufactured to the time the customer takes ownership.
This was more noticeable before covid craziness when cars would take weeks and even months parked at the dealership before they were sold.
The dealership is supposed to set the correct PSI before they deliver the car to the new owner.
My sweet spot is 27.5 PSI with BFG K02 285/60/18, D Load. OME Shocks & Medium Duty Springs, 2” Lift. 65,000 miles on the tires and still tread left. Zero accessories except a significantly lighter Magnaflow exhaust and lighter wheels. Smooth and silk (kinda). Mostly drive round in circles in Manhattan and Brooklyn with occasional highway and off road ventures. My mechanic will sometimes return the car with 32PSI. My teeth and brain start to rattle, more than usual. Incredible difference with only a 3-4PSI change. Great vid as always!
How's NYC these days? Is gentrification over? I heard the real NYC is back now....
Born & raised. NYC is back in full swing for sure. We now have super gentrification. The poor millionaire finance bros who gentrified Brooklyn and The Village are now being pushed out by billionaires teenaged children driving McLarens and Mercedes G Square’s. Actually. 🍿
@Damien Vizuete lol! So the gentrifiers are getting gentrified now?! 😆 🤣 love it. Irony!
What brand gauge do you use my guy? I'm using the brass Slime brand one but it doesn't have a hose. I'm considering buying the Joe's Racing one as it's highly rated. I got scammed buying a fake "AstroAI" one on Amazon which wasn't accurate and I had a cheap digital "Michelin" digital gauge I brought from Ross that wasn't accurate either. Aviation Gauges are the best but are extremely expensive. They come with an official certificate of calibration that actually means something. I tend to like exactly 31psi cold on my GX as I feel it absorbs bumps better as we have horrible roads in the greater St. Louis Missouri area for the most part.
@@devanrogers3133 I think it's an ARB guage ✌️
Thanks for the rationale. The notorious PSO question. I had mentioned in another video of yours. I put new tires on my new to me GX460. They were a more all terrain tire bit same size as stock. I put my PDInat 32. It rides like a "Lexus" Someone tried to tell me the ftint tired looked low. They are at 32 PSI. "Well I'd bump them up" ok thanks but good.
Once again thanks for the intelligent common sense view
lol.. ya... we have another on improper tire PSI (overinflation habbits and "airing down for comfor" myth) coming later this week... off the lot the dealer had them at like 45 psi cold 😆
I have a 2016 GX with only a rack and KO2 265 65 18 tires, after performing a chalk test multiple times, the ideal tire pressure is 45 PSI. At 35 PSI like you suggest, fails the chalk test.
What if the 32 psi is for the EPA and fuel economy? Does airing down give you a better ride with worse fuel efficiency?
Best pressure is 32 psi. Airing down will lengthen tread footprint for more traction... it will not make the ride more comfortable... that is a mythological misconception
How about if I added like roof rack, extra side racks, drawers, KO2 tires and etc that the weight increase like 400 lb then still keep at 32 psi ?
raise it up a bit to account for the extra weight preloading the car's tires... ✌️ We are at 34-35psi with bumper, skids, sliders added for reference.
Yes , I was thinking what if you had drawers full of tools thanks for asking that question @Ben Cti and thank you Mr. Gx for answering!
Just keep in mind that I think LT tires need more pressure than a comparable P rated tire to keep the same load rating. A guide I saw showed that for a suv or pickup tire rated at 35 psi would need 45 psi in an LT tire to maintain the same capacity.
Thanks for this. I just put the wikdpeaks on my new GX and the shop overinflated the tires to 37 psi. They said it was set higher because it’s cold out…Going to lower it tomorrow.
yes try 32 cold psi... we have wildpeaks on our Sienna you'll love them! 😃
34is fine
Just had Falken Wildpeak AT3Ws installed at Discount Tire per your recommendation from your video comparing KO2s to Wildpeaks.They inflated them to 42PSI 😮😮😮 Aired them down to 32 when I got home. I wonder why they do that?
You'll love the AT3Ws.. we have them on the Sienna... as to why people over inflate... well........ .....I'm afraid to discuss it 😕 😅 😪
Please help me out sir I really respect your opinion I become a recent subscriber. Can you please tell me what lightweight bumper you would recommend. I'm leaning towards aluminum and my off-roading will be to a minimum but I do want to have a winch. And if I do that do I stay with the regular front shocks and if not what do you recommend. Other than that I'm not going to do any rails at this time or underneath skid plates.. I appreciate your opinion.. thank you very much.. and after watching this video I went checked my new tires which are all season and they have 36 PSI so I'm going to do the recommended psi by you and Lexus. I have a 2015 GX 460 with 71000 mi I live up by lake Tahoe in the snow country here in California. So most of my driving will be Street and snow. And I do admire your off-roading and tell it like it is attitude. And you're helpful with your knowledge and I appreciate that.
Thank you for your kind words 🙏 and support. Check out the Ironman front bumper... however, it is steel. I wish they made it in aluminum too 😪
Interesting - in the NE - when i get in the GX it will say 31 or so. After driving 5 or more miles i observed they are now a mix of 36 and 37. If the ideal PSI is 32 then we would need to start off at a lower point.
No you have it correct, 32 psi COLD. As you drive the air will heat up and expand 3-5 psi. This is normal and the engineers always account for this which is why they specify to set the pressure cold/moringing time 😃
I like your channel you teach us but, also tell us to experiment so we can learn on our own too!
Thanknyou for your kind words Hamada. Please be sure to subscribe we have more projects and offroading adventures coming up 😃
My 2023 GX was delivered with 38 PSI. Should I lower it to 32 for city and highway driving?
Yes. The sticker psi is the propert psi designated by a team of experienced automotive engineers. Set it to 32 psi cold. You will notice a difference, you are 6 psi over inflated... it doesn't take much to induce the basketball effect 😀
@@LexusGX460-OFF-ROAD
Will a higher PSI improve MPG?
@Bill Balleza No. Some people did tests online and higher psi for mpgs has been pretty much disproven. Modern cars are already under govt pressure to get the highest mpgs. Higher psi will simply make the ride worse... the exception to this is to account for extra vehicle weight/load...
@@LexusGX460-OFF-ROAD
Great! Thanks for the information.
Will 36-38 psi illuminate the TPMS light?
no... only going very low will trigger the tpms light
I went from a stock P265 / 60 R18 OEM tire on a 2022 GX 460 to a BF Goodrich Ko2 LT265 /60 R18. Note went from a P ( passenger ) tire to a LT ( Light Truck ) tire , still the same OEM size, Stock GX 460 does that change the tire pressure ?? Thank you.
we have the same ko2 tires. If I didn't have the aftermarket junk on it I would have them at 32 psi/stock. Only reason we are at 34/35 is because of the added weight from the skids
@@LexusGX460-OFF-ROAD Okay, I had them at 34 PSI will try 32 PSI, When I purchased the KO2's at Discount tire last month , they had them at 40 PSI which they agued was correct for my GX 460, after the drive home and reducing the pressure to 34 PSI , Much better ride. Thank you. Enjoy your Videos.
@bernie toes Yes 40 is crazy. If you enjoyed 34psi you may find 32 to be perfect (stock) please try it and please update us on how you feel 🙏 😊
🙏🏼
You do have a drone!!!! Lol❤
lol yes, see our very 1st video... all drone 😆
To say you should use the pressure on the doorjamb all the time on and off road is ridiculous. The tire itself has a pressure range. The amount of pressure needed is determined by the amount weight applied to the tire and the rating of the tire. The only way to determine the best on-road pressure is the chalk test. You may find that each tire could require a different pressure. Also many people (like me) use “E” rated tires and you certainly would not use the doorjamb pressures on a tire's max rated of 80 psi. For off-road you would only use the doorjamb ratings if you are on dirt trails like in this video (you could drive a passenger car using on-road tires). If you are on a trail that has rocks and/or sand you certainly do not want use 30+ psi. If you are using factory pressures on a rocky trail you take the chance puncturing the tire and will have limited traction. If you are in a sandy environment (sandy trails/dunes) you certainly will not get far unless you air down. Again, to tell people you can go anywhere using OEM tire pressures is RIDICULOUS!