Re: water tite trailers
Bond-o's correct. DOT say's axles need to be stamped with the rated capacity. Wheels and tires are the same. From there you can figure it out. Please note that wheel capacity is not additive per side but is additive per axle. A tandom axle trailer with axels and tires rated at 1350lb (load range C) can handle 2700 lbs and not 5400lbs.
So I gotta ask, does a watertight trailer float?