I took my truck back to the dealer about two weeks ago to have my tire pressure sensors reprogrammed, front and back were mixed up due to tires being changed and swapped around because of vibration problems (10) tires Later, anyway, they called me back to the service area to look at something, and on the right rear inside of the tire there was a chunk of rubber gone about the size of a quarter right down by the bead and right to the cord. The tire has never hit anything, check your tires.
I thought that was real nice since I tow a fifth wheel once and a while and a 26ft Airstream and various other trailers, Oh, by the way these tires are what is causing your vibration on your trucks if you have the 20" wheels, It's been proved by myself and my dealership. I'm taking this tire back to Goodyear since I had to buy a new one for safety problems, makes me wonder about the other ones. I've just decided Chevrolet is going to change these tires to another brand, They will have to go to 275's because no one else makes the 265/20 E's, and I will not buy or let them put another Goodyear Tire on my Truck.