Coupling is the connection between the trailer and the towing vehicle. There are many types of couplings, depending on the loaded weight that has to be towed and the conditions of the towing.
Gross Combined Mass (GCM) as its name says is a maximum combined weight of a vehicle, the passengers, the trailer weight and the load weight. The maximum allowable rate is set by the vehicle manufacturer. Also known by the following terms: Gross Combination Weight Rating (GCWR), Gross Train Weight (GTW) or Gross Combined Weight (GCW).
Gross Vehicle Mass (GVM) is the maximum weight of a vehicle, including the vehicle’s chassis, body and engine, all the passengers and the cargo. It is obvious the trailer weight is not included in the GVM.
Single Axle Trailer is a trailer trailer hitches installed near me having one axle attached, with two connected wheels. Specifically for this type of trailer is that it can drag a certain weight of a load. On the other hand, Tandem Axle Trailer is a trailer that has two axles. The total number of wheels is 4. More wheels mean greater stability, so these trailers are excellent for dragging heavier load. It is also known as Dual Axle or Double Axle trailer.
Safety Chains are attached to the trailer, allowing the trailer to remain connected to the towing vehicle in case of their disconnection. They have to be checked every time a trailer is towed.
Tare Mass refers to the empty weight of a trailer. Usually, this weight is stamped on the trailer itself, by the manufacturer.