Originally Posted by AdamC
Stupid question here. I would love to upgrade to Load Range D's on my trailer but my rims are only rated up to 1900 lbs. Is it safe to put D's on those rims even though the load rating is higher on the tires? I would assume as long as I don't go over the original GVWR I would be good.
Yes you should not exceed either GVWR or GAWR. You need to confirm this by visiting a truck scale.
Moving up to a tire with higher Load Range would not allow you to carry more load on the wheels, axles or in the RV but would allow you to run higher than 50 psi which can lower the "Interply Shear" that is the internal force trying to tear your tire apart.
I write a blog on RV tire application and safety. RVTireSafety.com
Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV