Plain English answers on vehicle engineering, certification and modification rules across Australia.
4WD Modification Rules by State & Territory
How tyre size, suspension lift, roof height and GVM/GCM/BTC upgrade rules differ across every Australian jurisdiction.
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- NT vehicle modification guide
A summary guide the scheme applied in the NT, including details on process, the regulator and who can sign off on your certification.
- ACT Vehicle Modification Guide
A summary guide the scheme applied in the ACT, including details on quirks, the regulator and who can sign off on your certification.
- Queensland vehicle modification guide
A summary guide the scheme applied in the QLD including details on process, the regulator and who can sign off on your certification.
Before you modify - checklist
Don't touch a bolt before reading this. Failing to plan is planning to fail.
How to get a GVM upgrade
A step-by-step guide to successfully determining if you need a GVM upgrade, and what to do if you do
How much does a GVM upgrade cost?
A summary guide on likely costs and what to expect when getting quotes for a gvm upgrade.
