well, i got some rims coming but have been told that 245/35 are the right size to go with, and also 255/35...what would be the difference? Plus my car has been lowered with maxspeed springs.

 

245/30/20 is the right size. 245/35/20 is too big. Almost a 1" larger in diameter. 255 is about 1.1" larger in diamter.

If you dont care about the speedo being off, then i would take the 255 since i like more rubber.

Dixit