TowSense modification pathways

Modifying a light vehicle in Western Australia

Western Australia's modification process distinguishes minor work from changes needing inspection or further approval. Start with Transport WA's official guidance and confirm the category for the complete proposal.

Many minor modifications do not need specific approval, but must still meet applicable standards. This does not mean every accessory, wheel, tyre or suspension change is exempt.

For work outside the minor category, confirm the application, engineering evidence, inspection and modification-permit requirements before starting. Ask specifically about current and proposed ratings for any GVM increase.

Keep original specifications, kit documents, installation records and approvals together. Follow Transport WA's instructions for inspection and recording changes; this Navigator does not issue a permit or determine a legal modification limit.

Prepare a modification evidence worksheetFree evidence preparation for four modification groups across all eight Australian states and territories. No approval or certification is provided.

Preliminary advisory guidance only. This is not engineering certification, registration approval, a roadworthiness inspection or a finding that your vehicle is safe or legal. Confirm the complete modification package with the relevant road authority and an appropriately authorised certifier before proceeding. The paid TowSense assessment is also advisory.