Suspension and ride height — Queensland

Understand the requirements

Measure the actual change

Keep the original and current front and rear suspension datum heights, with a consistent unladen measurement method. Record front and rear working bump and rebound travel, original rubber bump-stop clearances, minimum ground clearance and supporting manufacturer or measurement evidence. A nominal kit size alone does not establish the vehicle’s height or available travel.

Enter the sourced original and fitted tyre diameters for the actual configuration. The physical height contribution is half the diameter difference. A larger optional manufacturer tyre can establish a dimensional comparison reference, but it does not replace the tyre actually used in the original physical-height baseline. Record body lift separately.

Understand the basic lift pathway

The February 2026 TMR Minor modifications instruction identifies a basic raising pathway for MC, NA and NB1 vehicles within the light-vehicle scope: suspension increase up to 50 mm, tyre-radius increase up to 25 mm, no body lift and combined increase up to 75 mm. For NA and NB1, provide evidence that the vehicle is a 4WD type covered by this raising pathway; the goods category alone is insufficient. These figures apply with the other relevant standards and vehicle conditions. A total below 75 mm does not by itself establish the pathway.

Declare the ESC equipment and compatibility evidence, steering and suspension geometry, component suitability and any additional conversions. Ground clearance, retained travel and the Queensland inspection criteria need their own evidence. Missing or conflicting evidence requires review even when the numerical height changes are within a basic allowance.

Identify the next approval step

TMR identifies Queensland codes LS9 and LS10 for high-lift design and modification certification in place of national codes LS7 and LS8. The February 2026 Minor modifications instruction describes a certified height envelope up to 150 mm combined, including suspension up to 100 mm, tyre radius up to 25 mm and body lift up to 50 mm. These bounds do not establish code eligibility or satisfy all design, testing and inspection conditions.

An appropriately accredited Approved Person must confirm the current code requirements for the actual configuration. This guide uses the December 2025 LS9/LS10 instructions and November 2025 testing guidance. Later changes to those documents have not been confirmed. Body blocks are limited to 25 mm when suspension lift exceeds 75 mm. A raise exceeding 50 mm with reduced as-manufactured wheel track is excluded from LS9/LS10. Exact certified checklist boundaries and the actual design still need Approved Person confirmation. Modifications outside approved code pathways may require a specific TMR approval. Existing design approvals, certificates and special approvals must be evidenced rather than assumed.

Retain the applicable testing evidence

LT2 testing applies to NA vehicles upgraded to NB1 with LS9 height certification and to MC2 vehicles above 3,500 kg, using a nominal test GVM of 3,500 kg or the higher certified GVM. The current no-handling-test exception applies to vehicles originally manufactured as NB1 above 3,500 kg. Document the original category and GVM to establish the appropriate branch.

Where ESC certification evidence is required, retain a manufacturer approval letter or authorised recalibration report, or an applicable approved-facility test report. Overseas evidence needs the prescribed local validation or NATA-recognised route and vehicle-match checks. Your Approved Person verifies and retains these records. Basic lift bands do not require extra testing solely because ESC is fitted.

Choose the correct assessment mode

Suspension mode checks suspension and its interacting physical height contributions. It does not assess tyre load, speed or wheel fitment. Choose the combined mode to assess both selected systems together, and read the remaining checks before relying on the result.