I would like to request that anyone who ran at mosport last weekend in the pro 1000 series check your front tires for any sign of sidewall fatique. I had 5 fronts either blow or about to blow. Goodyears answer is that they were underinflated or that there was excessive negative camber. We ran 15 psi cold and one degree neg camber. Please check the inside of the sidewalls for a breakdown of the carcass that resembles a sawtooth pattern and or bulges in the sidewall. Prior to the failures there was a obvious loss of balance which took up to 1.25 ounces of wieght to cure. Thank-you, jeremy hill 416-231-2007 or photon00@hotmail.com