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Are Rock Sliders Legal in the UK?

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Rock sliders and side steps are legal in the UK if they are securely fitted and do not create a sharp or dangerous protrusion. The rule that governs them is the general one about not making the car a danger to others.

Why?

Rock sliders protect the sills off-road and side steps help you climb into a tall vehicle, and neither is banned. They run into Regulation 100, which requires that a vehicle and everything fitted to it is not a danger to any person.

In practice that means they must be bolted or welded on securely so they cannot come loose, and they must not present a hard, sharp edge that would injure a pedestrian in a knock. Tubular sliders that sit close to the body are usually fine; anything with exposed sharp ends or that sticks out aggressively is the concern.

They also must not block any required lights or foul the tyres. Fitted tidily and securely, rock sliders and side steps are road-legal; a loose or sharp-edged install is not.

What decides if it's legal

  • They must be securely mounted to the chassis or sills.
  • They must not create a sharp or dangerously protruding edge.
  • Nothing fitted may make the vehicle a danger to other road users.
  • They must not obscure required lights or foul the tyres.

Does it depend on your car?

The danger-to-others test is the same for every vehicle. Whether a particular slider is a problem depends on how it is mounted and how far it protrudes, not on the car itself.

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Sources

This page is general guidance, not legal advice, on the rules in the UK for rock sliders. The detail varies by exact vehicle and changes over time - confirm with your insurer and the latest DVSA and GOV.UK guidance before modifying.