[Moto-P]

Originally Posted by Silp3

What's the advice on tire setup. If aesthetically pleasing springs aren't available for appropriate balance, would increasing tire width be advisable. Would a 245 tire fit well with stock suspension and maintain balance?

Increasing, or changing tires sizes both in width and diameter has consequences that change many different variables, and simply raising the contact patch should not be taken lightly or be treated as a fix-all solution. Increased tire contact patch also means less ability for the tires to reach proper temperature, and reduced grip over loose surface as rain and snow, and even dirt.

I think to keep the inherent balance of power and handling of the FRS/BRZ, the tire size change should be minimal, regardless of going with 16", 17" or 18" to keep the same diameter, and relatively small widths. 225's and 235 width should be plenty for a light FRS, to be fun and agile as universal car. Going beyond this only if there is a specific purpose in various field of REAL racing.