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Tyre & Wheel
Four wheel drive enthusiasts will be pleased to hear that Queensland Transport have
changed their regulations in regards to tyre size for off road four wheel drive vehicles (does not include all
wheel drive or soft roader). Previously you were only allowed a 15mm overall diameter increase on a
four wheel drive; this has been increased to 50mm.
Read more about the new regulation below.
Queensland Code of Practice - Vehicle Modifications, Transport and Main Roads, November 2012
3.4 Wheels and Tyres
The overall tyre diameter can be increased to allow an increase of 7.5mm in vehicle height for passenger
vehicles and no more than 25mm in vehicle height for four wheel drive vehicles (typically MC ADR
Tyres fitted to off-road passenger and light goods vehicles (MC, NA, NB ADR category) must not be more than
50% wider than the vehicle manufacturer’s widest optional tyre. Tyres fitted to passenger vehicles must not be more
than 30% wider than the vehicle manufacturer’s widest optional tyre.
The rim width must match the recommendations for the tyre fitted.
The tables of original tyres with the maximum allowable tyre and rim sizes in Clause 4.2 Non- Standard Tyres
and Rims in the NCOP are applicable.
The wheel track of off-road and four wheel drive vehicles (MC, NA, NB ADR category) must not be increased by
more than 50mm beyond the maximum specified by the vehicle manufacturer for the particular model. The wheel track
of passenger vehicles, including four wheel drives or all wheel drive vehicles certified as MA ADR category must
not be increased by more than 25mm beyond the maximum specified by the vehicle manufacturer for the particular
The wheels must be contained within the bodywork or mudguards (including flares) when the wheels are in the
straight-ahead position. Adequate clearance must be available between the tyres and the vehicle bodywork.
Speedometer accuracy must be maintained for the selected tyre and rim combination to within the degree of
accuracy specified in ADR 18 where applicable.
Queensland Code of Practice - Vehicle Modifications, Transport and Main Roads, November 2012 here.
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