Take multiple pictures of each tire thread, then go the local GY dealer. If he resolves your issues to your satisfaction i.e. pro rate your current tires for a new set of tires. If dealer dosen't resolve the issue to our satisfaction then call Customer Service at Good Year Mfg. back east. I think it is Michigan. They will ask you to send the tires or pictures of the tires to them. I had 4 GY tires blow out (not G16 tires) I now run the "GY "G" rated tires and after 3 years no problems. GY had the dealer send the tires back to them and had the dealer install 4 new GY "E" rated tires at now cost to me:) So far GY's warranty policy has been fantastic:):)