gwinger
Senior Member
- Joined
- Aug 29, 2016
- Posts
- 4,863
Load range C can handle up to about 1980 lb each, so 7920 on 2 axles. Since the axles carry a max of 90% of the trailer GVWR, that would allow up to an 8800 lb trailer. That's a not uncommon GVWR for a 30 footer, and low-balling the tires is an all-too-common shortcoming in entry level models. Anything to knock a few $ off the advertised price.
They may be rated for that, but you also have to consider the sidewall strength.
Load range C tires will squat with that much weight and you can only inflate them to about 45lbs. Load range D 65lbs. Load range E 80lbs.
What damage is occurring to the belts and tread when the tires bulge?
Plus the tires will run hotter.

