Regarding the super performance tires - why hasn't GM done this more? I know they're using PS2s on the 'Vettes and CTS-Vs (I think) so why have they been SO stuck to Goodyear? I get tired of reading about the GTR being that much better than Z06 but I wonder how much that has to do with tires, for example. I really think better
performance tires should be in the mix, as suggested