I have autocrossed my QV about 4 times now. A combination of poor negative camber on the front and really soft side walls is torture on these tires. The side walls get excessively worn, even running 40 PSI. Since these tires cannot be flipped to have the outside facing in they are going to be replaced far more often then I would normally have to. Does anyone else autocross their QV? Are there tires available that have a stiffer sidewall? I suppose I could run higher tire pressures in the front to reduce sidewall flex. There was a Camaro SS running today that was beating my 52 second time by 2 seconds running Goodyear F1 asymetrics and he was only running 29PSI with no sidewall flex...so is it best to just buy cheaper tires?