Originally Posted by Jdub.csu
"I have a vibration... are you sure you didn't hit anything"
My cousin bought a set of rims for his Acura and one of the tires had a bulge like that, though it wasn't nearly that big. We were working on our cars and he decided that it would be a good idea to pop it with a knife.
Needless to say, the thing exploded and hit him with rubber shrapnel. It was loud as hell.