I know of 14 different combines that have the 900 metric tires and they blow the bead . These tires are not mounted on the heavy duty rim like a 35.5x32. My assumption is the rim is eating into the bead and weakening the wall. If they would mount the metric tire on the heavy duty rim I believe we wouldnt be having this problem.. Are there anyone else out there having this trouble? Goodyear will adjust the tires at about 40% of new tire price. I think we have a rim problem,not a tire problem.