Nothing is wrong with them at first. Great tire! Sticky and everything you could want in a performance tire. Only thing is when you get down to about half way through the tread they start to harden and get really slippery. I've gone through 2 sets that did that and a friend of mine had the same thing happen to him on his Civic Si. From what I've heard around here that is pretty much how they all are. Once I switched to Bridgestone Potenza RE71s I haven't looked back. They hold their grip all the way down to the cord. I'm on my 2nd set and love them.
John Yim (Houston) 91 ZTT Stage III+ 30 BSP, Houston Region SCCA "...Just as they're about to catch me... Twin... Turbos... Kick... In..."