245's vs 275's vs 315's

[craig510]

How much faster would a 315 be than a 275 or a 245?

I am looking at having some custom wheels made for my falcon. I am going with TeamIII LT-III's in 17x10.5 or 17x11 or I stay cheap I can just bolt on some 17x8 mustang bullitt wheels and run 245's.



This is my car with 225/50-16 on 16x7 2005 Mustang wheels.



I have run a few AutoX events, this is the primary goal for my car. Does anyone have real experience and/or lap time data for different sizes of the same tire. I am looking at Falken azenis rt 615k or Nitto NT05's. From what I can find, the NT05's are the only option in 200 tread wear and a 315/35-17. I will be running the same size all around and will modify the chassis and body to fit. I need 200 tread wear for the Good-Guy's events.

-Craig