I run 245/40/17 Starspecs on 17X8's but they are a +48 offset instead of +45 like the RPF1's so my tires are 3mm closer to center than they would be on RPF1's. I can tell you that I was insanely more competitive this year than any year before. I'm sure that it's mostly me improving as a driver, but a big part of it has to be the new wheels and tires. I ran 225/45/17 RE01R's on lightish 16.8Lb 17X7.5" wheels prior to this year.
I think you'd be better off improving grip than torque, personally, so I'd go with the 245's for sure. I have no torque with my 2L but that doesn't seem to be hurting me.
__________________
Slow and low, that is the tempo.
|