I own a skyline toyhauler model 281 two axle. I had a tire blow out due to the leaf spring hanger bolts rubbing on my tire and it just grooved through the tire. I looked at all the other tires and sure enough all 4 tires have grooves due to a manufacture defect. I have only 1/2" of clearance between the tire and the bolts on each tire. There should be at least 1 1/2" of clearance. I have looked at other trailer and all of them had 2" of clearence so they will never have this problem. This could of been a major accident due to the manufacture defect. If any one has a skyline or any other travel trailer just take a minute and look for this possible problem it could stop a possible accident.