BEWARE , Ihave had all four (4) valve stems rupture on all four wheels. The first happened as i aired thies to 65 psi.I aired left front 65psi right front 65 psi ,as i started airing left rear i heard a stem blow the service rep. at discount tire came over and asked how much air i was putting in as the right front valve stem blew. after repairing tire with new stem and airing the remaining tires to 65 psi i left . today going from san antonio to laredo tx. I porked and noticed the left front and rear tires to be low .upon examination both valve stems were bad. so i checked the right rear and found it to be bad. went to the tire shop and had all replaced . TO CHECK YOUR STEMS , MOVE THEM FTOM SIDE TO SIDE AS MINE LEAKED . I was pulling my 18 ft. bumper pull 70 mph .thank god they didnot blow
grant

 

note I purchased the truck 02-04-04 it now has 12500+miles