Significantly better than the OEM Goodyear EMT's, but lack of tread is scary. Ride and noise better than expected, gives the GS the same feel as the Z06 Carbon edition. On the GS, almost impossible to break loose, very stable and predictable. A great autocross
tire, time will tell on tread ware. Certainly, the Goodyears 220 Tread ware rating is a joke, as I 've never gotten even 20K miles out of them- they get stiff and greasy long before tread is gone. I think the Michelins TW 80 rating may be almost equal.I'd be happy with 10K miles from these (without auto crossing them).