
What is an ATM upgrade?
Aggregate Trailer Mass (ATM) is the maximum permitted mass of a caravan or trailer when fully loaded and unhitched. An ATM upgrade assesses whether that rated limit can be increased for a specific trailer, configuration and registration jurisdiction.
An ATM upgrade may require assessment of the chassis, suspension, axles, brakes, coupling, wheels and tyres. Any required modifications, inspection and certification depend on the proposed ATM and applicable jurisdictional pathway.
Without certification, an overloaded trailer is not road-legal, may be uninsured in the event of a claim, and can fail a roadworthy inspection. Read our guide on Understanding the Key Differences Between GVM and ATM Upgrades
Our process
01
Assessment
We review the trailer or caravan, current ratings, intended loaded configuration and registration jurisdiction to identify the available engineering pathway.
02
Engineering
We assess the proposed ATM and identify the engineering evidence, component changes and testing required for the applicable pathway.
03
Inspection
The trailer is inspected and, where required, weighed or tested against the applicable engineering and jurisdictional requirements.
04
Certification
Where the assessment supports the upgrade, KME prepares the applicable engineering certification documentation. Final acceptance and registration changes are determined by the relevant registration authority.
Related services
Independent engineering you can trust
KME Vehicle Engineering provides independent assessment and certification for trailer mass upgrades. We assess the trailer, intended use and proposed operating mass, then identify the engineering and certification pathway applicable to the trailer and registration jurisdiction.
Engineering assessment
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ADR and state regulations
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Engineering certification
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Jurisdiction-aware advice
Vehicle-Specific Advice
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Touring vehicles
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Work utes
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Fleet vehicles
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Heavy vehicles
Australia wide
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Remote assessments
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Dealer support
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Interstate certification
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National approvals
Experienced
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15+ years of engineering
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Practical advice
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Fast turnaround
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Real technical knowledge
Daly was a pleasure to work with and has a wealth of knowledge, which he is happy to share. He is able to explain ADR requirements in simple terms and is more than happy to help customers understand the pathway to certification.
Steve P.
Very professional and efficient service. Daly is very knowledgeable and obliging and a pleasure to deal with.
Duncan T.
I can't complain about getting my GVM upgrade the same day I asked and paid!! Too good to be true. Amazing service.
Jamie L.
