I can attest to high performance tires being junk after 3-5 years. I have an 87 Dodge Shadow CSX that makes about 400hp and the car is undriveable on the Falken Azenis tires that are on it. The tires are nearly full tread, but they drive like they're made out of Teflon. I know what the tires were capable of when they were new and you just can't compare them.
That's why I plan on putting miles on my GTS... If I'm going to install tires every couple years, it might as well be because it needs them!
That's why I plan on putting miles on my GTS... If I'm going to install tires every couple years, it might as well be because it needs them!