TPMS and aftermarket Rims

[Mooseman1976]

I just put on aftermarket tires and rims on the 2025 Ram 1500 Limited.
Three questions:
- The TPMS light came on and is still on. Best way to get this to reset to ride on highway above 50 mph for 10 minutes?
- What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at.
- Is there a TPMS reset button? If so, where is it?

 

[2025 Ram Limited]

I just put on aftermarket tires and rims on the 2025 Ram 1500 Limited.
Three questions:
- The TPMS light came on and is still on. Best way to get this to reset to ride on highway above 50 mph for 10 minutes?
- What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at.
- Is there a TPMS reset button? If so, where is it?

I believe tire pressure is determined by the tire, not the vehicle. Post some pics of your new setup?

 

[vincentw56]

I just put on aftermarket tires and rims on the 2025 Ram 1500 Limited.
Three questions:
- The TPMS light came on and is still on. Best way to get this to reset to ride on highway above 50 mph for 10 minutes?
- What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at.
- Is there a TPMS reset button? If so, where is it?

There's a sticker on your door that tells you the tire pressure. On pretty much every modern vehicle.

 

[H2OMAN]

There's a sticker on your door that tells you the tire pressure. On pretty much every modern vehicle.

That's for the stock tires and only works if you replace them with the same tires.

 

[mikeru82]

I just put on aftermarket tires and rims on the 2025 Ram 1500 Limited.
Three questions:
- The TPMS light came on and is still on. Best way to get this to reset to ride on highway above 50 mph for 10 minutes?
- What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at.
- Is there a TPMS reset button? If so, where is it?

The sticker on the driver side door jam will tell you the stock tire pressures that will be correct pressure for the TPMS sensors.

You haven't given enough information for us to accurately answer all your questions. Mainly, which aftermarket tires did you buy? If you have gone with aftermarket tires which require higher pressures you'll need to decide if you want to run the lower pressure required by the stock tire or the likely higher pressure required by your aftermarket tires. It all depends on the aftermarket tires you bought and how you will be using the truck.

 

[oe542bob]

I don’t have a 2025, so I’m not sure about any “reset” button, but I doubt it exists. I’ve put different tires and wheels on my previous Ram trucks and on my 2023 Challenger. The tire pressure came upon in very short order. Don’t think I even went a mile and they all worked.
Couple of things to consider, were the correct TPMS sensors installed? Tire pressure to set would be determined by the new tire size, load and ride comfort you want.
One thing is to have someone (dealership or tire shop) use a code reader for each TPMS sensor and they can assign the sensor to the position on the vehicle. It happened one time for me, but that was on a 2015 Ram 1500. I got other tires/wheels (Ram wheels) that had the sensors in, but they wouldn’t read on the dash. My local dealership read the sensors and they all worked after that.

 

[SD Rebel]

The factory TPMS sensors will reset on their own, typically after 10-15 minutes of driving, but it can take longer.

As for your PSI, the door sticker will show what the OEM was, but that' also where the warning system set for. Which can vary wildly depending on what trim you have, most are in the 36F/R, but a Rebel for example is 55F/45R.

For example, if your stock pressures where set at 36F/R, that means if you go 5 psi lower, you will get a warning. Once you trigger a TPMS warning, it won't go off until you get that tire up to the recommended psi.

The reason why this can be an issue is for example a Rebel has tires that require 55F/45R psi, if you get a different type that is more suited to 33 F/R, you will get a warning until you have it reprogrammed, which has to be done with a special tuner or the dealer.

 

[kapinallinen2]

The factory TPMS sensors will reset on their own, typically after 10-15 minutes of driving, but it can take longer.

As for your PSI, the door sticker will show what the OEM was, but that' also where the warning system set for. Which can vary wildly depending on what trim you have, most are in the 36F/R, but a Rebel for example is 55F/45R.

For example, if your stock pressures where set at 36F/R, that means if you go 5 psi lower, you will get a warning. Once you trigger a TPMS warning, it won't go off until you get that tire up to the recommended psi.

The reason why this can be an issue is for example a Rebel has tires that require 55F/45R psi, if you get a different type that is more suited to 33 F/R, you will get a warning until you have it reprogrammed, which has to be done with a special tuner or the dealer.

Can alfaOBD do that?

 

[oe542bob]

Can alfaOBD do that?

I don’t know and actually I doubt it can on the 2025. I’ve done it once, but that was on a 2018 2500. I needed ( and had ) the four digit code to reset the RF hub. Worked great.
I’ve read the with the new electric system there has to be a proxy module alignment when any changes are made. Maybe the dealership can do it, but most probably won’t do it or know how, Alfa can’t do it.

 

[vincentw56]

That's for the stock tires and only works if you replace them with the same tires.

I read the post that's why I answered. It was asked:

"What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at."

 

[Reverse]

There is a calulator online that will tell you the pressure for the new size tire if you give it the OEM recommended tire pressure for the original tires:

Tire Pressure Calculator

Easy to use tire pressure calculator. Use our tire pressure calculator to calculate the new tire pressure needed when changing tire sizes.

tiresize.com

 

[H2OMAN]

I read the post that's why I answered. It was asked:

"What is the recommended tire pressure for these vehicles? I have always gone with 32 psi but cannot see what ram wants it at."

I don't know what tires you're running. If 32 is ok for highway speeds and rides nicely for you, then that's what you should run. I'm running 40 on my 35's because they beat me to death at 55. So, it's the tires not the sticker on the door.