U-Haul car trailer experience?

My experience is that the trailer is only as good as the retailer you rent them from. Sure they are overbuilt, but if you look at the abuse some of them get, it is amazing how well they hold up. Ask the rental location if they can show you the maintenance records on the trailer, latest packing of the wheel bearings, tire pressures, brake checks etc... Inspect the wiring connections and the safety chains, look at the tires for tread depth, mismatched tires, sidewall conditions etc... You know the drill. I've used them a lot with about 16 major moves under my belt and have since bought my own car trailer.