1. Maximum gross weight (i.e. trailer weight + load weight) must not exceed 3500Kg.
2. Vehicle manufacturers generally recommend the maximum towing weight for each model. This is not a legal maximum but is a measure of the vehicle's ability to tow. Some manufacturers use a definition like re-starting on a I in 8 gradient with a full complement of passengers.
3. A rule of thumb is not to exceed 85% of the kerbside weight of the towing vehicle.
Trailers manufactured after October 1982, which require brakes, must be fitted with a braking system complying with EC Directives. Since 1989 only auto reversing brakes comply.
It is vitally important that the trailer coupling and the trailer brakes are compatible.
If brakes are required they must be fitted on all road wheels. Linings must be Asbestos free.
Trailers manufactured after October 1982 must be fitted with a coupling, which includes a hydraulic damper.
Spring overrun couplings can be fitted as a replacement item on Pre 1982 trailers.
All road going trailers/caravans must have a suspension system fitted between the wheels and the chassis frame except for Agricultural trailers used at speeds of less than 20 MPH and trailers used solely for hauling felled trees.
Tyres must be capable of carrying the gross load of the trailer. Do not mix Radial and Cross Ply on the trailer
Current legislation on tyre wear applicable to vehicles, is also applicable to trailers.
Tyre pressures should be as recommended by the manufacturer. A comprehensive guide is given in the Technical Section.
All radial tyres must be `E` marked.
Retread tyres must comply with BSAU1446 and be so marked.
All trailers/caravans must be fitted with mudguards to catch grit and dirt and reduce spray thrown up by the wheels unless the body of the trailer gives adequate protection.
All trailers and caravans must be fitted with an approved style numberplate bearing the same number as the towing vehicle.
If brakes are fitted they must be in working order. Even on trailers where brakes are not compulsory.
