[jeffs2014]

I don't know where to post this at. I have gotten bigger tires on it. How the hell do I recalibrate.

 

[SnoFire]

If it is off by 1-2mph, I wouldn't worry about it. If it is more than 5mph, then you would have to take it somewhere that can do it. Dealers don't do that stuff.

 

[Frango100]

Use the following site to see what the speed difference will be:
Tire size calculator

 

[TJXJWJ]

You could get a programmer (Superchips for example). Those have that capability...and allow you to change it around again if you return to stock, run a different size for whatever reason, etc. Plus you get the benefit of a nice canned tune.