I have a 2006 Montana Mountaineer that has GVWR of 12275lbs but has 6lug 5200lb axles. This doesn't seem right to me but I guess they deduct some for pin weight. It came with Load E tires but I've had...
A previous 5er was 9600 gvw and it had 6 lug 15"s on 5200 axles and two sets of ST tires went kaboom in 48 months, just like clockwork. Having enough capacity for the FULL weight of the 5er and storing it on jack stands and using tire covers, with the second set, didn't help a thing. I got 16" wheels from etrailer and LT 16" tires from Discount Tire, for a total of exactly $800, and never another tire problem. Craig