[Vracer111]

For me, I really like the 205/45-17 size Max Performance category tires I'm currently running (Kumho LE Sport) on my still stock suspension FRS... much more optimal than the stock tire size for a 7.5" width rim. Diameter is ~.3" less, so speedometer will be a little off, but in the proper direction (reading faster than you are actually going.) Benefits is you do gain better acceleration/deceleration when on and off the throttle from the better 'gearing', chassis agility is noticeably improved, CG is lowered by half the diameter decrease (So it's ~.15" lower than stock), and you have tire mass equal to or even less than the stock tires (= better ride quality).

The stock tire size for this car probably should have been 205/45-17; it fine tunes the chassis even more and quickens its responsiveness. The last thing you want to burden this car with is heavy boots (big, wide sticky tires)...you really notice the loss in agility. What you want is lightweight "track shoes" (narrow somewhat sticky tires) that maximize the chassis's potential. A maximum agility setup trumps a setup with higher traction but with more numbness in the chassis response...