[Stripit]

So many of the G rated tires, 3750 lb capacity were running so close to that number on some of the tires under a Mobile Suites unit that they just could not hold up for long periods of time. Seeing treads peel and some actually blow out from the over worked condition. A lot of folks have moved up to the H rated tires that carry 4805 lbs of load, giving a safety margin the G tires don't have. Having both rear tires fail like you did, have you weighed each axle separately? It is possible that your carrying a heavier load on the rear axle causing those tires to be running almost at their limit. Might be worth seeing if that might be the case. If you could weigh each wheel position you would know for sure if any of those tires are running too close to their limit