Originally Posted by devo
I don't believe that BMW is cheating either. Comparative tests should be conducted on the same type tire; that's all. Any other test is unfair.
You are right, most late model cars have run the Ring on CUP tires. The 911S has not.
To me its not the cheating part that seem to be the problem for you. It seem to be the possible beating on the 997S on the N-ring.
Do you own a 911 ?
It's the RS4 the M3 need to beat, not the Porsche.