Looks like serious heat doesn't do them any favors....these are some IRC tires that came with my Seca. I knew I'd be replacing them soon, but with the heat the past couple of days in Maine, it looks like I'm not going to be riding until I do! Frankly I feel kind of fortunate to have made it home.
That tread separation goes all around the tire. I have a Battlax on front that doesn't look too great either.....