iR user
Don't the tyres still loose grip with temperature at all time, optimum is at ambient which at best may be 40'C? Compound can't be right if optimum is that low, that's what I meant by compound modeling. From what you said, sounds like we do have some compound modeling already which creates more difference between the cars, great but what about optimum temperature?
Compounds effect the performance of the tires in many ways, obviously. However, from one tire to the next, even sometimes with drastic differences, the performance isn't wholly different. In the case of temperature performance, there are weaknesses in the tire code on members where the tires produce optimal grip offset from where they should. Dave has been and continues to work on that.