Quote:
Originally Posted by Texan
Yes, the 17.5x6.75 wheel is rated at 4850#. The most I have seen on 16'' wheels is the 3750#. I had 2 of the factory 3750# wheels get a hairline crack in them. I replaced 1 and when the other happened I bought a new set of 16'' Hi-Spec wheels. They look stronger as they don't have spokes which seems to be where the weakness is in the factory wheels. The wheels are still 3750#. I run Sailun 235x85x16's and they are obviously stronger than the wheel.If I were to go with the 17.5 tires it would be for the wheel and not the tire as the difference in weight rating between the two tires is very little difference. It seems the Sailun that had the blow-out was just defective. There are thousands of these tires on the road putting millions of miles on them each year and this is a rarity. I have as much confidence in Sailun as I ever did and I have been running them for 5 years with no problem. Anyone running 235x85x16 Sailuns is running well below there rated capacity and as long as they are properly inflated and inspected frequently should not worry about them. If I had an rv like the DRV which runs 18k to 21k gvw then I would have the 17.5'' tire which is standard on them anyhow.
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Texan, I did notice that Sailun has a higher rated 17 1/2" tire in one of their docs. It has a near similar size as the 235/85R 16. I had even considered upgrading to it when I replaced the Sailuns now on my Montana but considering the ~$2k cost and harsher ride, may reconsider. Just for those wanting the extra margin.
https://www.sailuntire.ca/MRT/S637.html