I went from the stock 24.6 to a 25.3 tire and when I changed it in HPT I lost my cruise control completely. What's the deal? I even reset the final drive to 3.05 where it was before because I noticed that when I changed to the 25.3, the final drive went to 1.00:1 for some reason. It's not good either because according to the traps at the end of the 1/4 when I'm doing 102 on the speedo in HPT, I'm actually crossing the traps at 109.