I'm at the dealership now getting a service done and getting a look over before my warranty expires in May. I asked about flashing the PCM if I get a taller tire and he said they only do the recommended flash for the tire size of truck. I'm in Indianapolis and was wondering if anyone knows of another dealer that is mod friendly? I go to Andy Mohr in Plainfield and personally don't like the rep that handles my truck. We're had a few issues with each other before. Now I think he just won't work with me because of it.

 

Some one corect me if im wrong but my understanding is the soft ware on the dealers computer will only flash to a tire size that is available at the factery. There are several after market programs [tuners] to correct for tire size but there use could cause powertrain warenty isues