A Guide to Inspecting Second Hand Trailers

The Importance of Rigorous Inspection

Purchasing a second hand trailer is a strategic way for businesses to expand their logistics or promotional capabilities without the capital expenditure of a new build. However, unlike passenger vehicles, trailers in the UK do not require a mandatory MOT. This makes the buyer’s due diligence critical. A trailer may look structurally sound on the surface, but its roadworthiness depends on the hidden health of its mechanical components.

Structural Integrity and Chassis Health

The first point of inspection should always be the chassis. High-quality trailers, such as those in the Lynton hire fleet, often use galvanized steel to prevent rust. You should inspect the main frame and cross-members for "spidering" (fine cracks) or heavy corrosion, particularly around stress points like the drawbar. A weakened chassis can lead to catastrophic failure under full load.

Braking Systems and Running Gear

For any trailer with a Gross Vehicle Weight (GVW) over 750kg, a functional braking system is a legal requirement. When inspecting a pre-owned unit, check the overrun hitch - the mechanism that applies the trailer brakes when the towing vehicle slows down. The bellows should be intact, and the damper should offer resistance rather than sliding freely. Furthermore, wheel bearings are a common failure point; any "play" or grinding noise when the wheel is spun indicates that a replacement is imminent.

Electrical Safety and Certification

If the trailer includes internal power for lighting, heating, or AV equipment, the inspection must go beyond the standard road lights. For commercial and public-facing use, electrical systems should be NIC EIC tested and certified. This ensures that the RCD protection, wiring insulation, and earthing are safe for operator use and public interaction.

Tires and Road Legality

Trailer tires often perish from UV exposure and standing still rather than from tread wear. Check the sidewalls for "crazing" or cracking. Even if the tread depth meets the legal 1.6mm requirement, tires older than five years should generally be replaced to avoid high-speed blowouts.

Ready to browse a range of professionally vetted units? View our current stock of second hand trailers or contact our technical team to discuss our refurbishment and certification services.