This depends on the type of usage the trailer is subject to. As a minimum recommendation, we suggest having the trailer inspected and serviced every 12 months and more often if and when you notice anything is required. If the trailer is in regular use then, as with any other vehicle, the Brakes, coupling, wheels/tyres and other moving parts should be inspected more often. In addition, it is important to grease the jockey wheel and trailer tilt mechanism regularly. Tyre pressures should be checked regularly. Wheel bolts should be re-torqued to 80-100 n/meter after the first journey.