Originally Posted by sick04mustang
235/50/18 same overall diameter as stock 17's
I wouldn't do this.
This guy has bad info. That tire has 27.3" diameter compared to the stock 25.7" which will throw your speedo way off.. Check out tire rack you can see diameters
235 might be a stretch on a 8.5 wheel and surely would be a stretch on a 9.5 wheel and would look goofy. Also putting a skinnier tire than stock on a mustang is gay.
245/40/18 on front and 275/35/18 for the rear will be spot on matching the wheel width you selected and matching factory tire diameter keeping the speedo correct if you don't have a tuner to compensate