I searched for it, but I was wondering if 255/40-18s would fit on the stock Evo X GSR wheels? I'm not sure what the car is lowered on right now, but there is not much wheel gap.

 

Bump.

 

You could go to Tirerack.com and look up the specs (the diameter)on the tire you want to put on, compared to the tire you have. Don't forget if one tire is, for example one inch bigger, thats is only 1/2 inch "at the top" of the wheel well.