I'm on my third set of Z rated tires at 66,000. Its starting to get a little old. I drive the car for a year and my tires are bald. I've spent some big bucks on Z rated tires and they dont hold up. I really dont care if they are a softer tread or can go 255mph; If I need to hook up I have slicks and If I want to go 255mph I'll jump out of a plane. I just purchased some Mowhawk tires that are V rated. They were $100 bucks each, installed. They seem to ride very well (although I havent had them over 200mph, yea right!) and have a great tread desgin. I anyone else happy(or not) with a non- Z-rated tire?