Quote:
Originally Posted by rory_a
This is the concept I was seeing over and over again in the comparison - the difference in grip is negligible at this power level over 225 wide, and being at a better point in the power band out of the corner far outweighing the added grip from the slightly larger contact patch.
I know more than anything I have to improve the driver most. That aside, I'd like to have a set up that will enable me to progress and have fun. No rush on tires, but planning to use the Rotas for winters, and looking at RPF1s, and thinking I will need new tires mid-summer. Just want to know how much I need to roll/pull 
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I think your discounting the extra grip you'd get from going wider more than you should. And you do understand that coming out of the corner faster (due to more grip) is a better way to get your RPM's up than running shorter tires, right? I'm not saying that I'm necessarily right or wrong with regard to which tire size is best in this example, but just wanted to make sure you understand that principal.
Also, wider/taller tires could have an effect on your ability to get the alignment specs/parts you want so the 235's may be a safer bet.