[Kevin 1G Drummer]

Kevin, If you wanna run a 17x8 +40, (that's what the 3s wheels I had on my car today are) you would need a mild spacer on the back wheels, otherwise the inner lip of the wheel will hit the lower control arm.

I don't think there would be any issues with a 245 over a 235, other than they would stick out just a little farther.