Just brought a new Chev Silvarado 1500 with 20" Goodyear Eagle tires. When doing a little research on the tires, which I wish I had done before buying the truck, found out they're passenger car tires....
hello, i have a 2009 gmc, same tires. 31,000. tow a 23 traibazer. i now need new tires, and have posted same question. hope to get an answer. have not had any real problrms, sometimes a little sway. i did add air bags to help, did make a difference. i was happy with mine, jus wore out. i did max out the air pressure when towing. good luck