Why RVs and trailers go through parts faster than cars

A passenger car encloses its bearings, runs every week, and rarely sits loaded in a driveway all winter. A trailer does the opposite. Hubs are exposed to road spray. Brakes may only work when you are towing. Tires carry near their maximum load on the two trips a year they move.

Electric brakes corrode when they sit. Magnets and shoes rust to the drum. Lighting grounds fail because the frame paint is the ground path and it is a poor one. Leaf springs flatten. Couplers wear oval from a ball that was the wrong size.

None of that means trailers are poorly made. It means they need a different maintenance rhythm than the tow vehicle. Annual hub service, a lighting check before each season, and honest tire replacement intervals prevent most roadside failures.

When a part does fail, identification is easier if you bring the old piece. Trailer builders mix vendors from year to year. We match hubs, seals, and lamps to what is on the trailer, not to a universal chart that does not exist.