Well, this explains why my service tire pressure system warning came on 25 miles down the road. Oh, and that tire that went flat was stuck dead center of the tread by a bolt that measure at least 3/8 diameter. Trash one each tire with only 4800 miles on it. Discount said because metal was showing on the inside of the tire it couldn't be repaired. And, I now have a full replacement warranty on all 7 tires.
