Off-road” for OPUS camper trailers and caravans refers to travel on unsealed, natural terrain such as dirt, gravel, sand, or grassy paths, specifically designed for off-road vehicle use. This excludes extreme conditions like rock crawling, water crossings deeper than axle height, and travel on terrain with sharp objects or severe obstacles that could cause underbody damage. Warranty coverage applies only to off-road conditions that the vehicle is reasonably designed to handle. Damage resulting from misuse, exceeding these off-road capabilities, or traveling in prohibited extreme conditions is not covered under warranty.

Ball Weight

Ball weight refers to the downward force exerted on the tow ball of the towing vehicle by the camper trailer’s coupling system. The tow ball is the point where the camper trailer attaches to the towing vehicle.

Maintaining an appropriate ball weight for your vehicle helps prevent issues such as swaying, fishtailing, or loss of control during towing.


The Aggregate Trailer Mass is the total mass of the fully-loaded caravan or camper when it’s not coupled to a tow vehicle. It includes the mass of the caravan’s chassis and body, as well as the maximum load it can carry.


Refers to the weight of the vehicle when it is empty or unloaded. This includes the weight of the trailer itself along with any standard equipment or features it comes with, but without any additional cargo, fluids, or passengers.