A Tire is A Tire - NOT True
Please take what I am about to tell you with a grain of salt. I have worked in the tire industry for over 20 years. If you view my profile you will find that I am an engineer for Michelin, and work in their Research & Development in Greenville South Carolina. During my years I have driven and distroyed every manufacturer's best and worst tire (including our own).
My 85 BabyNBlue has Michelin's on it when she is headed for a show. Looks and they stay new when you don't drive them. For every day use in dry, wet, and in SNOW ! the Falken ZE502 ZIEX "Z" rated work well. A tiny bit hard on the ride, but wear well, quiet, and get rid of the water between the rubber and the road well. And they are about $100 a corner less expensive. I did not say cheap. I have right at 15K on my current road set, and if you would like, I can send you a photo showing how well they are lasting. Got an easy 15K to 20K yet to go. So long as I keep the air pressure checked OFTEN!
Every major manufacturer of tires have good ones, great ones, and then some that just ran. Polymide if very expensive, makes really good tires, but then it depends on if you are running 120+ every day in 100 degree heat.....Most of your Z and W tires are made with it for extreme high temperatures. Quality in tires is in almost every case a direct relationship to the price. The competition is so tight that there is not that much mark up in the high performance tires.
Hope this helps.