AlfaOBD: Change Your Tire Size To Fix Your Speedometer After Installing Bigger Tires On Your Ram!
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- เผยแพร่เมื่อ 17 ต.ค. 2024
- If you've installed bigger (or smaller? Eww) tires on your Ram truck, you've probably noticed the speedometer is off. It says you're going 70 MPH? You might actually be going over 75 mph...Normally you'd need to pay a bunch of cash to your dealer (assuming they even reprogram tire size) and have someone else handle this for you, but not now! It's easy to reprogram your truck to display the accurate speed after installing bigger tires.
Don't Know what AlfaOBD is? • AlfaOBD: What Is It? I...
You'll need the OBDLink MX: amzn.to/2Cvb032
Alfaobd app: amzn.to/2LuO72m
Tire size calculator: tiresize.com/c...
With this easy to follow tutorial, you'll have your truck programmed quickly and enjoy more accurate mpg calculation, speedometer, odometer, and maybe even better driving (the transmission will know what's going on now).
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Man, I'm so glad you made this. I went off some written instruction off a few of the Ram forums and they left me hanging. Your video cleared it all up and now my stuff works. Thanks brother!
Nice! It’s funny, although it isnt much different just seeing it without any skipping between screenshots makes all the difference!
Finally got around to doing this to my 2018. I put the laptop in the front seat and just start /stopped you through this and TPMS reset. Easier than I imagined. Thanks for the videos.
Fantastic!
Never knew you’d have to make ABS corrections after tire size change. Gonna save this video 👍
Charles great video easy to follow, I did get the 4wd not available, service trailer brake, no speedo, and heavy steering. This is nothing you did wrong after letting my truck sit for a half hour it cleared its self. I have had to fine tune the size and let it sit every time. Also if you’re not getting an abs fault there is no need to run the abs reset. Hope this helps people with similar problems and thanks again for this great video.
So glad I saw this - I was freaking out. Same exact thing happened but with “AutoPark Disabled” and “Service Air Ride”. Had the heavy steering and no speedo. Let it sit 30 mins and good to go. Had to clear one engine fault but all good. Thanks for this info.
Thanks, I was wondering why I had no faults when I did mine, so I figured I didn't need to do the abs reset. Thanks again for easing my mind
This worked great for my 2014 ram 3500. At first I could not get the abs light to turn off. I apparently didn’t do something right as I tried a few different times. I then took it slow and made sure I followed to a tee and it worked flawlessly. Moral of the story is it work for my 14 and when the abs wouldn’t go out, it was because of my error. Great video and thank you for sharing
I updated the tire size for my 37” nittos but it didn’t let me press “start” for the abs initialization. No ABS lights have come on. Will this become a problem?
Mine never seems to let me hit start whe you select abs initialization, but I follow through with the rest of the steps and can hit start on all of them
I don't comment on many videos, this saved me from making a trip to the dealer. I changed the tire size and all of a sudden no speedometer check engine light and abs light. I freaked out haha. Thank you so much for the video!!
I have RAM 1500 2015 hemi so today i was trying to change the tire size with the help of alfaobd and obdlink sanner all well good except speedo meter was off by 3 km so i reprogramed the tire size to get the actual speed reading but this time some thing happened and my speedometer is now not working also i got a message that says 4wd temporarily unavailable, also note that the steering is feeling heavy now + the gear changing is delayed ..can u help?
@@pirshah330same exact thing happened to me!!! Any luck with finding out what you did wrong?
Hey bud have you had issues with parking sensors not available? I have a 2021 Ram 1500
I changed my tire size and yes my parking sensors are not working anymore. 2021Ram Rebel running 325/65R18
I did. Then I calculated the closest to tire size and changed it to that and I got them back.
Following this to a T and the ABS initialization won't load so I have to skip it and go to ECU initialization. It's crazy cause I had no issue changing to 35s. But now that I'm trying to update to 37s it's not working. I'm not sure why I'm having this issue. The ABS initialization page doesn't load to give me the function to click start, the buttons remain gray and don't load up to red to click.
Mine is doin the same stays gray. Did you figure it out?
I'm looking for bypass cable for 2022 ram 2500. Which one would work with alfaobd?
Thanks for video. Did you run transmission quicklearn procedure?
It's not letting me do the ABS step. Can you please help. I have a 2016 ram 3500
Great vid charles..a little fast for us newbies out here...a little more explaining what and why you chose those other steps like abs,rolls...what the hell is rolls?stuff like that...not all of us out are computer wiz bangs....I think i learned more from others commenting and some questions that were not answered by you would help a bunch.
Agreed, very fast for us old school guys as well.
So I have nexen roadian 315/70R17s and there's no setting for a 315 but I picked 2560mm and it's off by one mph, am I close enough and is that going to cause any transmission issues?
It shouldn’t cause any problem, as the tires wear down it will change a little too. Heck 1mph is closer than what most vehicles accuracy is
I tried following this procedure on my '21 Ram 2500 and was able to get to the ABS initialization step but when I go to click start, the option remains grayed out. I've double checked that I'm still connected. Have you heard of this issue/know of a fix for it? I was able to reverse the initial change to the tire size and clear all the faults that popped up but can't proceed until I can start the ABS procedure.
Did you ever figure it out, because my stop start button is also greyed out
I am stuck here also
Hey Charles, thanks for the video. I did all the steps on my 2016 Ram 2500. After I got everything done my check engine light is now on. I ran a code check and nothing was throwing a code. Any ideas on what I might have done wrong. Thanks!
Hey man! Geez, AlfaOBD has a clunky UI! Hey, I commented on the Squarebody rollover vid, but like you, I have a mid-trim PW. The only options it came with were tow mirrors and the 8.4 Uconnect (luckily). Oh and the mixed emotions Dragon's Puke graphics. But if I found a steering wheel with the rear control buttons for audio control, do you think Alfa would be able to let me enable that feature? I also noticed that noticed that you changed your instrument cluster to the higher end EVIC. Can you reprogram the milage as well? I'd like to find an actual PW one, but chances are pretty slim compared to just a Lariat though. As a content idea, how about a slower overview of just AlfaOBD itself?
Don Leamon yes you can reprogram odometer and engine hours on new evic with AlfaOBD
The EVIC mileage programming is coming very soon! Getting the video together now. From what I've seen, the steering wheel controls are plug and play (with the wheel+harness). Great idea on the Alfa content/slower...there is just so much content with it!
2022 RAM, added 33.1 inch tires, up from 31 in (2462 mm). With alfaobd, do you want the speedo to match the actual speed clocked with a GPS app? Or, just use actual circumference of new tires, which is 2642, which makes the speedo run at 2-3 mph faster than actual (compared to GPS speed app)? To get the speedo accurate, I have to reduce mm to 2595, which isn't the actual tire circum, but it make the speedo accurate. Any insights appreciated!
It would really be up to you, but I would personally set it to be accurate with gps speed! Tires are frequently “off” from the specified size, so it would be best if the vehicle knows exactly what size the tires really are.
Hey, I follow the procedure one time but the speedometer was still off. I did went through the process again to fine tune it but now the MIL is on and the speedometer does not work. Please help
Follow up.
While I research about how to fix this (some 40 minutes) the truck reset itself. I went and test drove it and is all good and speedometer is spot on.
Thanks
After clearing rolls information I get notification "Failed. Service Not Supported In Active Diagnostic Session." Help!
You connected to the wrong abs module.
To adjust tire size perfectly after the initial change, If I go UP in MM it will make my speedo slow down and if I go down in MM (tire size) it will make the speedo faster right? Also do I have to change everything again, I assume so because you are changing sizes again....Thank you!
Hi Charles, I ran into some issues when changing the tire size.
After making those changes, when I go to ABS and try to select the Body Control Unit I do not get the ABS Ate/Continental.
I tried selecting my model and for some reason after connecting and opening the hood for the ABS Initialization, the start button never lids up.
Can you please assist me with this.
Thanks in advance!
Having the same issue. I continued on anyway and still have a check engine light with a b23b6 code
Speedo 3 miles under gps. Allowed me to change once. Speedo now 2 miles higher than gps. Will not allow another change. Any ideas. Only thing I notice is that Abs Initial. (Start) doesn"t do anything (shows instr. screen). Everything else seems normal. Any ideas. Thanks
Is there something I am doing wrong? I have plugged in 2688 and 2730 for my tire size (276/65/20). And either way, it is about 2 mph faster than actual speed. Any thoughts? My tires are not in list.
I am having trouble when entering the tire size. I have a 2018 ram eco diesel and just put 295/65/20 tires on it so 2799mm circumference. When I do the manual add tire size and hit start it shows me my old size and when I hit next it goes back to the tire selection page. I hit start again and it won't do anything for a while and when I keep hitting start it brings back my old tire size. What am I doing wrong?
I tried to follow you instructions but you rushed through and I got lost and still can't change tire size on my 2017 2500 Ram...can you help me??
So, after you enter your new tire size, are the rest of all those steps necessary? What exactly is the purpose of everything AFTER entering your new tire size??
I would like to know this also...good question.
If you don't follow those steps the malfunction indicator lights will remain on your dash and the speedometer may not work. On my truck without following the steps after setting the tire size I had a dash full of fault lights.
Thanks Charles. Your videos are always helpful.
Glad they help!
Can you program/calibrate the two axles differently? i.e. 325's (35.4") in the rear and 35's (actually 34.8") up front? I Put on a proper lift so the upgraded control arms etc. front and back will cover geometry, and wouldn't mind getting 3/10" of factory rake back from these lift kits that net -2" Rake change by using shorter rear springs vs. how much they lift the front. Put another way, how would I account for a lesser difference, say 1/3" between front and rear, If I put on new mudders on the back and nearly bald ones of same size in the front??
So I’m getting 34.3inch tires and online calculator shows circ of 2733. So how are your 35s smaller?
2017 Ram 1500 . ECU INITIALISAtion "start" option is not available. Why do you think
Hi Charles. I just installed the OBD linkmx + with the adapter. I managed to change the tire size to the exact speed as my GPS. the issue I have now is I've gone from 19 to 20 litres per 100km to now at 28 litres per 100 km. shouldn't my gas mileage be better? would really appreciate if you could help me with this.
I have a 21 ram 1500 5th gen. A local shop told me a PCM unlock by the dealership is necessary for speedometer calibration. Have you ran into this issue?
Does this alpha odb device have to be left plugged in all the time or can it be removed once changed are made?
Shift points on the transmission won't be affected by tire size, the transmission shifts on engine RPM no?
Does this work for a Fiat 500 Abarth? Is it even an option? I went from 16s to 17s, both factory sizes, and my speedo understates now.
I let mine sit for five minutes and when I put key back in ignition I didn’t get any faults did I just get lucky with the abs stuff I have a 15 if that matters?
I selected one of the preprogrammed sizes because my winters are 275/55r20, I didn't have any lights come on. Did i do something wrong?
Hi there, what if i have the rear wheels are different than the front one? I have 285/30 r21 rear
245/35 zr21 front. Could you please advise
Hey thanks for the video, much appreciated. Couple questions. I didn't see where you adjusted the transmission/shift points, is this done by the programmer automatically when tire size is changed? It is a bit unnerving that all these codes happen to your brand new 70K plus vehicle 😳 Are you still using this system today, have you experienced anything that would want you to warn against using now?
The trans shift points and handled by the truck-it just needs to know what size tires are on!
I’m still using it today, there are really no downsides since you can always change things back if something is messed up.
Just don’t randomly change settings lol.
@@chazpages thanks, much appreciated
If I were to install the michelin defender ltx m/s 275/65r18... what do I put down as the tire circumference? TireSize says it has a circumference at 100.7", which is 2557.78mm... how will I know if the system accepts that number/nearest number? Thank you!
Do you have to disconnect security gate way before doing this?
Thank you so much for doing this. It helped me a lot. 👍😊
Thanks for this video. I just changed my tires on my '14 Jeep Grand Cherokee EcoDiesel 4x4 and went from 265/50/20 to 275/55/20 KO2's and was wondering if the AlphaOBD you have does this same thing you did for the Jeep Grand Cherokee's? Could you check on your AlphaOBD and let us know please. This will make my decision into buying it since there isn't an answer on their website for this question. Thanks a million.
Hello,
I have a 2016 with 17’s and 37’s. How would you put that in?
Hey man thanks for the video. I'm have abit of trouble getting the right setting for tire speed it seem to be off by 1.5mph. Everytime I try to lower the tire size in mm it doesn't accept it and throws errors with abs, air suspension, 4wd. I have a 35x12.5R17 Toyo A/T I I. They have a the 18 inch rim listed (2684mm) that works but like I said the speed is slightly off. And when I go to abs I can start the initialization bit can run the other two you show.
Tried this on my 15 ram 1500 everything was the same except ABS initialization didn’t give me a start button just a list of things to do to complete it.
Hey charles, Thanks for all your videos, lots of help. question, if I do this I don't need the speedometer correction tool?
Thanks.
Thank you for posting this.
So.. something I'm curious about .
I have a 2021 Ram 1500 Classic.
I changed my tire size using AlfaOBD, and used your video as guidance.
I successfully changed my tire size, however I did not get any errors, and reconfirmed that the size saved, and it did.
Can I expect errors at a later time ?
Also, the ABS module you displayed is different from my Ram, I do not have the "ABS ATE/CONTINENTAL"
I gave ABS Bosch, just to test, when I selected it, I started getting a flashing ABS light, I disconnected from the truck, and it went away.
Any input on this?
I just changed my tire size on my 2021 ram classic and same thing I did not get any flashing lights on my dash. I’m thinking that is supposed to be this way since other guys have mentioned same experience. Have you had any lights come on since you changed your tire size?
I need help, this is not letting me start abs initialization
Thank-you. Great video. Question. Cofiguration log never changes the Dynamic Tire Circumference? Seems to change speedo, but not log info?? Thanks
How do you know which Power Net to use under body computer. I saw another video which showed about four different versions for 2019 RAM 1500. Does the unit tell you or is that something you need to find out prior to? And if so, how?
dt new body
I have a check engine lamp on now. Any idea if it will go out eventually or do I need to clear something?
check the error codes and see what it's for. May or may not be related to changing the tire. Sometimes it just gets set off when changing other settings.
hi，is this video, what size tire you are running? My tire is nitto rige gapper
35 /12. 5/r20, the website you provide say is 2791mm but after change still feel little not accuracy
It's not always perfect, since tires say they are one size, but are frequently smaller/larger. Check with a phone/gps to see what speed you're going when the truck says 60 mph (or any speed really, but over 45 would be best).
Charles Pages I change the led
Light setting, but after that, my rear left and right side light not working any more, dash thought on light out at rear both side turning light, any suggestion?
I did the same with the same tire size I'm off by about 4 miles an hour did you adjust up or did you adjust down cuz my millimeters are 2791. Speedometer says I'm going 75 but phone says I'm going 71
@@johnmanukyan6843 take a level, put it on your tire so its level, measure from the ground up to the level. Convert inches to MM. BOOM.
Phenomenal dude!!! Subscribed! Now can this thing handle my 2017 Ram Rebel?
2021 Ram Rebel. Changed tire size to 2760mm I'm running a 325/65R18 now my parking sensors are off and won't come back on. Anyone know why or how to correct this issue.
So when I attempt to do this it says The option is currently set as: The procedure is not relevant for the control unit.
So what size is 2714mm? Okay I was able to get it my tire size is 275/70/18 so the circumference is 2644.
@charles pages
Thanks! Nicely done video. I have a 2017 2500 and just bought AlfaOBD v2.1.9.4. Sadly it does not have the ABS module ATE/Continental option and AlfaOBD won't connect to the ABS Bosch/Teves/TRW/ PowerNet MY2013-18 PowerNet option. Any thoughts on how to get the right module?
What? no answer...
Same no Ate/continental option 2013 Ram 2500 4x4 5.7hemi
Hey is there an option in the software to have power mirrors fold on ignition off
No, only active systems like Tazer can do this. 2023 is rumored to have it with a new towing mirror.
So I have a 2013 ram 2500 bighorn on 35x12.5r17 and I can’t seem to find size and get to the next step with the ABS stuff.
Do you know how many MM it is to change 1 MPH? trying to get it 100% acurate
Do you need a bypass cable for 2021 RAM 2500? I’m using alfaobd app and OBDMX+ and everything is communicating, but not making the changes.
yes
If you have the Edge Pulsar which also allows you to change tire size, which one trumps the other??
Probably whichever was used last. They probably both program in the same/similar way as far as the computer is concerned.
Charles, how do I figure out which control unit I have for my Ram 1500 classic? thanks
I just pick 2019
I did this on a ram 1500 2010 followed all the steps and now I can't get rid of the abs light please help😔
Get this taken care of yet? Did you reset all the modules?
@@chazpages did every step of video and I still have the same problem I'm starting to think my front passenger abs sensor is bad because sometimes my brakes act weird 🙄 and my abs lights start flashing
Alex im having the same problem did you fix it?
Is this the same procedure for 2010 3500 ram
Hello Charles. Thank you for the videos. Could you please help?
I've changed my Diff in my '13 SRT 300. The Diff settings have been changed in HP Tuner. The car drives, but I've lost FCW and ACC.
If I can recall, it's a speed sensor calibration problem.
My Mopar Mechanic fixed this in 10 mins with WiTech, when I did this before. But he's now left the company.
Just confirming, Alpha OBD only changes the BCM and not PCM or TCM? I'm very worried I'll damage my Tuner's tune.
Any information would be great. Thank you. Duane
Does the truck specify that fcw and acc are unavailable/service them? Or they just don't show up anywhere? I would try resetting/clearing all codes in each module with alpha just to rule those things out. It's possible that an error code was triggered there and now it shows as disabled for you.
@@chazpages Yes, it says that ACC/FCW is unavailable and service is required. Ok, I'll reset/clear all codes, with AlphaOBD. I'll go download the software now. Thank you.
Yeah Id give that a shot and go from there. Sucks to lose those, especially the acc! My favorite feature on our other car lol
@@chazpages Yes, I use it all the time too. Thanks again.
I have RAM 1500 2015 hemi so today i was trying to change the tire size with the help of alfaobd and obdlink sanner all well good except speedo meter was off by 3 km so i reprogramed the tire size to get the actual speed reading but this time some thing happened and my speedometer is now not working also i got a message that says 4wd temporarily unavailable, also note that the steering is feeling heavy now + the gear changing is delayed
I only wish you where close to NJ....Most dealers and 4whd shops have no clue. I`m willing to pay for someone to correct my tire size..My current tire is LT 315/70R17 Cooper AT3 what would be size in MM.
Will it work at Dodge Durango as well?
I followed the steps and now get fuel range 1999 miles. What could be the cause? Ram 1500 2014 here.
Did you reset the fuel stuff on accident while coasting down a hill or something? Which would make it calculate the remaining range based on a real high mpg? Did this resolve?
@@chazpages no. Problem fixed. It went back to normal the next gas fill .
ABS ATE/Continental doesn’t show up in the list of options for my 2015 Ram 2500, I’m not really sure why lol. I tried it with a different one that has the model year range where 15 would fall in, but it wasn’t going to let me proceed so I backed out and am now redoing some more research…. Any idea why that would be the case on my end?
So in other words it wouldn’t let me get into the ABS static initialization so I had to revert back to what the settings were
So far this is great software but I was unable to make a backup to Google drive or even open in chrome. I have made changes and everything works so far and I know what I've changed anyways and the values of original. Any format help would be appreciated though
Hi great video will this work on a 2020 1500.
Do you need the pin for this to work?
No pin required!
Yeah I tried this today no luck the tires were switched but I can't get the ABS to reset it won't even allow me to hit the start button to do the update of the ABS I talked to a guy at Dodge and they said no one's allowed to do that anymore and I'm going to have to buy $200 module now from any Aev , I don't know if anybody has a fix I have 37-inch tires and I guess I'm not going to be able to drive my truck till I get the module let's supposed Plug & Play the EPA is not even allowing people to mess with their Tire in the truck anymore
How do I determine which body control module I have?
I tried doing a demo for my tires size..why is mine 2765 and yours is 2714? Thats a big difference
hello after i do everything in driving my steering is not same before and it is harder to drive and turn
I have a 2019 5th gen. Curious if the same process is needed as the 4th gen. From reading that issues can occur I'm hesitant to do it without knowing for sure, heard of bricking the computer too...any ideas if it would be the same?
Do you have the 19 "classic" model? If so, it'll work. Regular 19+, I'm unsure. You'll still need the bypass though.
How did it work with the 19
@@AZ33033 it worked great. Had to play with the tire size for my 35s in mm. But downloaded a free GPS speedo app to fine tune the speed in relation to the tire size in mm.
Did you follow this video to the t?? Did you do anything different
I know that the 2018 needs some bypass wiring installed for the OBD MX to function. I am waiting for that and the MX+ to arrive. Just purchased the app and was messing with it according to your video. I went to "Select Control Unit" and the years only go as high as 2017. How do I get this to work on my 2018? or did I just get hosed out of $49.00.
Try the 2017, and you didn't get ripped off! You are correct that a bypass will be needed for 18+
Charles Pages
where do I plug the bypass cord in at? I have a 18 as well
Choose the 2017 option. It will work. I use 2017 for soem options in mine. I have a classic 2019 1500
@@clayw.3413 if you got this from koadtech. Go to their website. It has simple instructions or TH-cam it. Some has very easy to learn videos
Please make a video on how to active DRL on factory projector head lights.
Good vid. I did this the first try and it worked great but speedo was still a lil off. So I went back to change it. Not sure what happen. But power steering,park sensor and 4x4 are out. Not sure what I did wrong.
Just following up. Its seems like the truck wasnt fond of my 37s. I took a beer break and went back. Seems like its reset it self and all was good. I will stress. Be super careful what ur changing. Still a great vid bro
Seriously, even with the steps right in front of you all the beeping and dinging throws you off haha.
@@tonyvontes200 what mm did you use for your 37's?
@@sickofpdx I think the last adjustment I made was 2956 but that put my speedometer like 2 mph ahead. Still need to tweak it. Thx again. Hope that helps everyone.
Yeah mine is not resetting. No speedo and check engine light is on.
Hey, Man! Thank you for the video! I just have a problem with my 2022 Ram 2500 ABS initialization, it wouldn’t let me press the start button 3:18
Could anyone please give me an advise about that?
Same here, did you figure it out?
I've always wondered what if you had huge tires on but you program it for some small tires how would that affect the vehicle I wonder 🤔
Haha, speedo would be way off and transmission might shift kind of funky...it could be done though! I’m unsure of just how big or small you can program though, I’d imagine there is a limit?
Programmed the tire size and it took the change. ABS initialization is greyed out though. ABS light is on now with warnings. Tried clearing codes, driving the truck and reconnected AlphaOBD. It connects and the ABS initialization is still greyed out. Bad ABS pump or module? Code: C0020
Did you get this figured out. Same thing is happening to me.
@@kbraulston I did. I did an ABS bleed procedure which was available and then the lights and codes went away after restart. Pump worked great through the procedure, so I think air or moisture in the brake fluid might be causing the errors. Give it a try, brake fluid is cheap
Anybody know why clearing rolls infomation keeps failing procedure
Where do I find the circumference of my tire to program??
After I did exactly what the video step-by-step my speedometer not working ABS light on
That happened to me also had to go to the dealer and have them reset everything
What did they charge you?
Great Video 2 questions
1) Will the ABS lights and others come on if you just select a tire size from the menu?
2) Can you show how to turn on mirror lights as marker lights?
THANKS
Yes it will
Will this work on a 2010 Nissan Titan Pro-4x?
Is this software still available? It does not shore up on Amazon just curious if you know.
check this out! amzn.to/3k1l3zK
Thanks I appreciate your help
I keep having a TPMS code come up after I did this ?
Is there still the 5 minute wait between each step while doing this?
I never did-I think that applies more to different settings, not tire stuff
I wonder if me letting it sit saved me from having to change the abs stuff as when I came back I had no abs lights on have a 15 if that matters.
When running static ecu it says coding data not received and then fails
I don’t have the option to click the ABS initilization
Awesome video man! Very helpful
No one reports the abs light and speedometer stops working along with odometer