idahoruss

This quote is from the Tire Review web site: So, the bottom line here is: • 49 U.S.C. 30122(b) does apply, but only to the TPMS low pressure/malfunction warning lamp. • While NHTSA would prefer otherwise, sales and installation of aftermarket tires and wheels – and plus-sizing – is perfectly acceptable, providing your shop does not disable the TPMS MIL. • Aftermarket tires are still not required to work with factory-installed TPMS. • If you work with an auto dealer to sell and install wheels and tires on new, untitled vehicles, FMVSS 138 requires that the entire TPMS – sensors and MIL – function as if it were OE. • If the vehicle owner, after buying replacement tires and wheels, still wants the full benefits of their TPMS, they can take the vehicle back to the auto dealer and have the TPMS reinstalled or reprogrammed to work with their new wheels and tires. The decal tire sizes are for stock tires and the TPMS must work with the stock tires at the time of the sale. The new owner can replace the tires and/or wheels and the dealer can recalibrate the TPMS to match using the tech tool. There is a lot of information available when searching for TPMS or tread act on the internet. You will have to find a dealer who is familiar with this law and not so conservative that they will not do the recalibration.

Your dealer can set your TPMS to the pressure you specify. In my case, I kept the tires from my 2007 and they set the TPMS for my 2012 to 65 psi to match my tire's load carrying pressure, found on the sidewall. Depending on my load, I can go from 55 psi to 60-65 psi with no warning. They did not charge me for this because I asked for the change when buying the truck. I do not know what they would charge for a "drive-in" request. It is a pretty quick process. Russ J.