Does anyone know what diameter the wheels are on that Porsche in the first pic. I have 18x10 wheels 275/35R-18 tires front and 18x12 335/30R-18 rear. I have searched by wheel diameter on tirerack and all the tires I find are about 26" overall diameter. I don't know if the racing tires on that Porsche are available in different non-DOT sizes. I'm just not sure if street tires are available in the same sizes as racing tires. I would like to see if someone knows the specs on the wheel/tire combo on that Porsche. What I find is that the short sidewall tires tend to give less warning as they approach the point at which they break loose.
