I ran Dayton HR4's on my '97 Maxima for several years (they were on it when I bought it). Their wet grip was impressive. Dry grip was what I had expected from a high performance all season. I personally put 30,000 miles on them before replacing them (with Potenze RE750's), and I don't know what the previous owner had on them. When it was time to replace them, I tried to locate new ones but was unsuccessful (pre-BITOG, so I didn't know they were Bridgestone/Firestone). So I got the Potenza RE750's, which are downright impressive summer tires (but can't handle even light snow. Don't ask how I know this...). I am currently going to replace those today with Avon Tech M550 A/S because I can't afford the Potenzas, and I need A/S capability. The Potenza's have lasted right at 30,000 miles, and have actually been my favorite tires of all I've ever used.
Based on several hundred excellent reviews on the Avons, I'm looking forward to thrashing, I mean, trying them out.
Dave