Originally Posted by ChrisSlicks

I would consider that the speed rating would be compromised. I've driven just fine on patched tires and even raced them at auto-cross (< 70m/h), but I wont drive them at high speed on the track. A high speed blowout is a rather major event, so even if the chance is less than 1% you don't want to take that chance. If you're just driving it on the road at fairly normal speeds you should do fine.