What tires for Z06???
You can't really compare tires by treadwear unless you looking at 2 of the same brand. In other words a Goodyear 300 will not wear the same as a BFG 300 or a Kuhmo 300 etc... It just means that a Goodyear with a treadwear of 300 will last twice as long as a Goodyear with a treadwear of 150. I've had both Goodyear and BFG and I felt the Goodyears had better traction but were worse in treadwear and higher cost. I also had Kuhmos and they lasted forever but were as hard as a rock and provided very bad traction. I can't speak of any other performance tire as I have only had those 3.

