Running Solo events and some open tracks. I have a '94 GT HR Super Sport springs, Bilsteins, sub-frame connected, 17x9 R's. I'm lookig at Kuhmo XS tires. I was thinking about 245-40/275-40. Is it more important to stay with the same tire diameter or the same sidewalls. The 245-40 are 24.7" diameter the 275-40 are 25.7". Hate to mix with 40/45 series just to stay with the same diameter. Anyone else running a GT that is set up about like this? How about front camber settings? This is my second year so any other advice would be great. Thanks for the help.