Safety first: the brakes on the trailer

29. April 2021 um 16:38

Brakes for the trailerBefore every trip with the trailer, you will certainly check your lighting equipment and the locking of the trailer on the towbar, but the wheels and brakes should also be checked regularly. Your trailer will have its own brakes itself if it weighs more than 750 kg. It is set that trailers can only be pulled without brakes up to a maximum permissible total weight of 750 kg. Why is this important? Because, above all, with increasing weight, the braking distance of your combination changes and the trailer infects the vehicle from behind when braking. It practically pushes the towing vehicle when braking, so that the vehicle’s brakes have to be more efficient. At the same time, there is an increased risk of pulling out of the trailer with heavy trailers without their own brake.

The overrun brake

So if your trailer is heavier than 750 kg, a so-called overrun brake is required. This prevents the vehicle from being pushed by the trailer during braking and follows a simple mechanical principle. The overrun brake works like this: When the vehicle brakes, the trailer runs on the vehicle or the trailer coupling. A lever is thrown by the forces that are generated, which in turn releases the trailer’s brakes. The more your car brakes as a towing vehicle, the more the trailer is braked by the overrun brake and the load is distributed over both brakes.

Emergency braking with the breakaway rope

If the trailer should come loose from the ball bar, the overrun brake will of course no longer work. In that case, the breakaway cable is your protection for braking the trailer. You have to attach the breakaway cable to a part of the car that is permanently installed with the vehicle; our MVG trailer hitches have a special eyelet on the cross member to which you can attach the breakaway cable. Otherwise you should use a special holder. When the trailer detaches from the towing vehicle, the pull on the breakaway cable initiates emergency braking and the trailer comes to a standstill. So you should always pay attention to the correct use of the breakaway rope, as it is very important in an emergency.