Need new tires
Need to replace the 5 year old tires on my TT and need some advice about upgrading. The trailer is 38 feet and has a GVWR of #9975 and currently has Load Range D tires from the trailer manufacturer. ...
Forum Discussion
If rims are 6-lug, I'd make a guess they're rated for 80 psi. You probably won't find a psi rating stamped on the rims, but possibly a max. load rating that corresponds with LRE and thus 80 psi. I just had our 6-lug alloy wheels off to do a bearing repack. Rims are made by Sendel and marked 2830 psi. There's a model number on them that I looked up on Sendel's website and confirmed they're 80 psi.
Without doing the math, I would guess that the ST LRD tires had a rather low reserve load capacity and that LRE would be the right tire to use. I'd also guess that the dual axles are rated 5200 or 6000 lbs with that GVWR, and not the common 3500 lb axles on lighter trailers. I think that's another indication that the rims would be 80 psi rated. You want at least 15% reserve load capacity on ST tires and the new tires will be somewhat higher than that.
Without doing the math, I would guess that the ST LRD tires had a rather low reserve load capacity and that LRE would be the right tire to use. I'd also guess that the dual axles are rated 5200 or 6000 lbs with that GVWR, and not the common 3500 lb axles on lighter trailers. I think that's another indication that the rims would be 80 psi rated. You want at least 15% reserve load capacity on ST tires and the new tires will be somewhat higher than that.
