A verified Isuzu NPS 300 heavy-vehicle project: GVM increased from 6,000 kg to 7,500 kg and GCM from 9,500 kg to 11,000 kg, with KME engineering assessment, brake testing and Queensland certification.

KME Vehicle Engineering upgraded a 2024 Ford F350 from 5,638 kg to 6,059 kg GVM in Queensland, supported by suspension, axle, wheel/tyre and brake-system engineering.

A real KME Vehicle Engineering project: Chevrolet Silverado 2500 GVM upgraded to 6.0 tonnes in Victoria, including suspension, axle re-rating and brake-system certification.

A completed KME Isuzu NPS 75-155 project increasing GVM from 7,500 to 8,000 kg and GCM from 11,000 to 12,000 kg, with super singles and VSB 6 engineering.

Modifying a tow vehicle — through a GVM upgrade, a GCM upgrade, or heavier-duty suspension — can take it outside the specifications it was built and registered to. Without an engineer's certification, those modifications may not meet Australian Design Rules (ADRs), which can affect both roadworthiness and insurance outcomes. This guide explains what tow vehicle certification covers, when GVM, GCM, and ATM limits require an engineer's sign-off, and how the VSB14 and VSB6 codes

A factual guide to VSB 6, including which vehicles it covers, common and specific modifications, Section S rating changes and jurisdictional approval requirements.

A super-single conversion is not finished when the wheels are fitted. Engineering evidence, approval records, tyre-pressure information and operating procedures must work together.