Just trying to come up to speed with all this tire age, inflation, load range etc. We have a 1997 Gulf Stream Ultra (V-10 ford) 30ft long.
Have had 4 blowouts over the years, all were 6 years old. We religiously check tire pressure at the beginning of each day cold. Presently the rear duals are all 6.5 years old (didn't go anywhere since last fall) so I am looking at replacing them, front two are only 2 years old. But in the discussion I don't hear or understand anything related to load range. The Coach says on the manufacture plate that the tires should be LT225/75R16 E It actually came new with D range on the front and we didn't know any better back then, they should also have been E according to the specifications. They say they are 6 ply (2 polyester, 2 steel, and 2 nylon).
I was talking to another RV'r at a club I belong to and he said that his tires were 8 ply but he upgraded to 10 ply, and now I hear people talking about 14 and 16 ply, or ply does not relate to radial, etc! Somewhere I also read that the higher load range tires have more grace on inflation pressures. Are our tires too low on the scale and maybe specifications have increased since 1997 and what is listed on our chassis plate is no longer valid, my friend runs his tires 8-10 years and has never had a blowout.