Re: Tire Reviews -- keep your post updated!
I got about 3800 miles out of my Diablos. That was wearing to the belts on the rear, the tire went from good to completely worn in one day with high ambient air temps (109). So I am sure the asphalt temps were pretty excessive as it was extremely sunny. The edges of the tire had scorthed rubber that was peeling.
I have replaced them with Metzeler Sportec M1's. I have had them on for about 1000 miles and I like them much better than the Diablos. They warm up fast and stick like glue. The most striking difference is the turn in on them. I can turn the bike in under acceleration and it flicks with 1/3 the effort it took with the Diablos. Some folks may think it makes a twitchy Monster even more so, but I like the feel. It doesn't feel unstable, just will flick side to side as fast as my reflexes allow.
I think the Diablos were a bit better in the wet though, I never really had much traction loss with the Diablos but the Sportecs have cut out a bit in the corners on some rain slicked roads. Nothing unmanagable, it lets you know the traction is going away.