As the summer season kicks off, it’s the perfect time to make sure your trailer is up to the task. Whether you’re a tradesperson hauling tools, heading to a show, transporting machinery, or gearing up for a family getaway, a well-maintained trailer keeps your plans moving and keeps you safe on the road.

This guide walks through essential summer trailer checks to avoid breakdowns, reduce repair costs, and ensure your trailer performs at its best all season long.

Why Trailer Maintenance Matters

Summer brings longer journeys, heavier loads, and more frequent use. Your trailer needs to be in top condition to handle it all. Failing to carry out basic maintenance is one of the leading causes of trailer breakdowns. Worn components or electrical issues can also pose serious safety risks not just to you, but to others on the road.

If you’re wondering whether trailer servicing is worth it, think of it like this: prevention is always safer and more affordable than repair.

1. Brake, Suspension and Tyre Checks

A worn brake or a cracked tyre might not seem like a problem until you’re halfway through a journey. Here’s what to look for:

• Brakes – Make sure they aren’t binding and apply smoothly. Listen for any grinding or squeaking.

• Suspension – Look for corroded springs, worn bushes or sagging corners.

• Tyres – Check for cracking, bald patches or uneven wear. Confirm they’re inflated to the correct PSI.

• Spare wheel – Ensure it’s in good condition and accessible in case of an emergency.

Pro tip: Use our Tyre Pressure Chart to find the right inflation levels for your trailer.

2. Lighting and Wiring Health

Your trailer’s electrics are crucial for safety and legal compliance. Faulty brake lights or indicators can lead to fines and dangerous situations.

• Test all lights – Make sure indicators, brakes and fog lights are working correctly.

• Check your plug – Look at the 7-pin or 13-pin plug for corrosion, broken pins or loose wires.

• Inspect the wiring – Make sure there are no cables dragging on the road or fraying near contact points.

Need help checking connections? Use our Trailer Wiring Diagrams for a quick visual reference.

3. Tow Hitch and Coupling Safety

The hitch is the main connection between your vehicle and trailer, so it must be in perfect condition.

• Check that the coupling head engages and locks correctly

• Inspect the breakaway cable for wear and proper attachment

• Make sure the jockey wheel is functional and locks securely when not in use

If the trailer sways when towing or feels unstable, the hitch or nose weight may need to be adjusted. A trailer technician can assist with balancing.

4. Straps, Loading Ramps and Securing Gear

These may seem minor, but they’re key to safe and legal transport.

• Ramps – Look for any damage, missing bolts or rust

• Straps and tie-downs – Replace any that show fraying or weakened stitching

• Hooks and hardware – Check that all fixing points are solid and fit for load-bearing

5. When to Book a Professional Trailer Service

Even with regular checks, there are times when a full trailer service is the safest choice. At GT Towing, our team in Hertfordshire provides expert servicing with a focus on safety and reliability. We offer:

• Brake inspections and strip-downs

• Wheel bearing cleaning and re-greasing

• Full wiring and lighting system testing

• Axle and suspension checks

• Professional tyre assessments and advice
  
  

We recommend booking a service if:

• The trailer hasn’t been used since winter

• It will be covering long distances in summer

• It’s used for commercial or heavy-load work

• You’ve noticed past faults or unusual behaviour

Book a Trailer Service at GT Towing

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