You should be able to have that done at a shop, but I wouldn't know what the approx charge would be for it.Thats right , I don't have a lift, and I don't want my speedo off at all, but I was wondering if there was any way to have the computer reprogramed for the larger tires at a shop or something like that
Jay is right. I've heard Computer will compensate up to 3% after that size its game over. New rolling radius will have to be modified in comp.Here's the deal, I know someone who has 285/75/R17 on the same truck that you drive and has no problems (clearance wise). I have since put 285/70R17 on my '99 Yukon with very little bump on full suspension travel. My speedo is off exactly 6.2%. I simply rely on the math to tell me how fast I am going. I have noticed however that I only calculate it when I see a cop. :biggrin: Now I have read and am pretty sure that the Hypertech Power Programmer will adjust the Speedo if you have changed tire size. You simply plug in your tire size and it automatically adjusts. The PP is about $350-$400 but in addition to an accurate speedo you get improved performance!