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Vehicle lift standards maintain safety of our road users

Unsafe vehicle modifications can put all road users at increased risk of accident or injury.

There have been no recent changes to rules related to vehicle lift limits in Queensland which are set to ensure the safety of all road users, including the vehicle occupants.

Exceeding those limits can affect the safety of road users due to high rollover tendency and have an adverse effect on Electronic Stability Control (ESC) performance and handling. A high lift also changes the zone of impact on other vehicles in a crash and the glare from headlights, increasing the risk to other road users and pedestrians.

Queensland has a maximum allowable lift with certification of 125 mm, which is slightly lower than the 150 mm allowed under national standards. The lower height was implemented in 2012 in response to serious 4WD incidents at locations such as Fraser Island, where a spike in fatalities and serious injuries related to rollovers were experienced.

Queensland is currently taking steps to raise the maximum allowable lift to 150 mm to ensure consistency with national standards.

Under the Queensland Code of Practice: Vehicle Modifications, vehicle lifts above 50 mm for ESC vehicles and above 75 mm for non-ESC vehicles must be certified by an appropriately qualified Approved Person to ensure the vehicle remains safe on the road. These requirements have not changed.

A suspension lift up to 50 mm does not require certification in Queensland. This modification is often combined with an additional lift of 25 mm by tyres. Whilst this is acceptable for non-ESC vehicles, for ESC vehicles, this requires certification, which is consistent with the National Code of Practice.

The owners of vehicles with high lifts are encouraged to make sure modifications are compliant and approved to ensure the safety of all road users.

To find out more refer to page 3 of the Minor Modifications Vehicle Standards Instruction G19.9.