I want to run 33x12.50r20s. I know that in 2007 the federal government made a law that requires manufactures to instal Tire Pressure Monitoring sensors on the vehicles they produce. so i want to know if i put new bands and sensors on my 33's if there is a way i can reprogram the computer so the light will stay off and work properly with what ever pressure i set my tires to. Any info would be great thank you.

 

From what I've been told, the onboard TPMS can only be altered by the Star Scan Tool at the dealership. Dealerships are hesitant to change it because of liability reasons.
Seems to me since this is a feature of the PCM, aftermarket tuner makers could easily be able to give you control of this via a handheld programmer. None do to my knowledge. Might be time for some guys to put a little pressure on Superchips and Diablo to incorporate the feature...

 

My wife has those on 05 Mini and sometime before we got it they changed the tires and didnt put back in the sensors. It will run find without them. The just monitor and dont make the car run any differently on hers.

 

Can you reuse the sensors? Exp. take them out of one set of wheels and put them on another set?

 

and in an inspection state they will fail you! Which is crazy, since most vehicles don't even have them in the first place!

It's considered a non-functioning safety device, and if equipped, they must be functioning properly.

stupid little things can be over $100 each too, depending on the make and model of your vehicle...



Yeah, the originals in my Grand Cherokee are now in the Terra Grapplers. Only problem is, the TPMS is set for an operating range of 32-44 PSI for the factory tires. Max on my Nitto's is 35 PSI and I got 32# in them. On a cool morning, I gotta drive a couple miles with the stupid sensor going off till the PSI comes up to 32. Its either that or run the tires right at the max, and I get to hear the thing bugging me constantly when I air down when it's a little if it's muddy and I got the Jeep instead of the truck up at the farm...

 

Yeah, the originals in my Grand Cherokee are now in the Terra Grapplers. Only problem is, the TPMS is set for an operating range of 32-44 PSI for the factory tires. Max on my Nitto's is 35 PSI and I got 32# in them. On a cool morning, I gotta drive a couple miles with the stupid sensor going off till the PSI comes up to 32. Its either that or run the tires right at the max, and I get to hear the thing bugging me constantly when I air down when it's a little if it's muddy and I got the Jeep instead of the truck up at the farm...[/quote]



Ok good, cause we are getting the chome clad wheels for my dads 09 Ram so we can just take them out of the old painted 20"s and put them on the new chrome 20"s.

 

i kinda has an assumptional feeling that an inspection was why he really wanted them. You know here in GA we done have that crap. My momo just moved to VA and they have it there and she failed on either the BJs or wheel bearings and a pressure line for the PS pump (leaky).

Ive said it before and i will say it again, Im glad we dont have that crap here because I know mine wouldnt pass simply for the exhaust alone.

 

I do tires and just to let you know you don't have to get new sensors and our tpms will go down to 33 psi before the light turns on and will go as high as 80 before the light turns on

 

They can be re-used as long as they are good.
Rebuilding them is not a bad idea while they are out. A rebuild kit costs under $20 and consists of a new valve stem and seal.(specifically for TPMS sensors)

They mainly go off when pressure is too low rather than too high, although they will go off if way too high.
As for the light....You could just pull the bulb. TPMS isn't a part of OBD-II so, if there is no illuminated bulb, you will pass inspection, that is if you have strict rules. What they don't see, they don't know... even if there is a ding going on, they won't know WTF is going on...lol
i don't think Alaska is a strict emissions state???? I could be wrong, but generally emissions is in highly populated areas. i don't think Alaska qualifies as one....lol

 

Thanks for all the info. I live in alaska and we dont have those checks that you were guys were talking about. i just dont like the light on and i want it to work for my wife. i work two weeks on and two weeks off and if something happens then i want her to know because the light works. so taking the bulb out or anything like that wont work. when i bought my truck that light was on so i read what dodge said in the book. but the light would never go off. so i went home got my gauge and checked and the pressure was 50 in the front and 45 in the rear. but inside of the door frame said i needed 65 and 70. so i filled them up that much and then it took two restarts and the light went out. i talked to the dealership and they wont change it. oh well. Thank you guys