Can I convert my 2002 1500 from 17 to 20's without changing gear ratio, or raising the truck as far as lift? Also anyone have suggestions on where to service vehicle (fair, and honest) in the Dallas area? I'm at almost 90k, and need to have some suspension work done as well.

 

As long as you get a tire with a diameter around 33" you won't need any kind of lift and I wouldn't think your gear ratio would be affected that much if at all.

 

You'll be fine. if its the same overall size. i went from the stock 20's to stock 17's with wranglers. RPM was bout the same since its the same overall size basically. less than 1/2 inch off.