Originally Posted by Danthurs
I'm running a 245/45R17 on my car with no problems at all. This tire is about 1" wider then stock, and 1" shorter then stock. I'm sure I can get a 255 on. It really depends on the offset of the wheel. But pulling the wheel out to avoid rubbing, you start to move out past the edge of the car and the tire can hit the fender on a hard bump.
If it is shorter in overall circumfrence ,Than you may have an incorrect reading on you speedometer.
although you probably know this already, the sidewall height is a percentage of the width, so if you were previously running 16" with a smaller width and higher sidewall, its possible it came out even