tyre sizes (again)
Submitted: Wednesday, Mar 19, 2008 at 21:33
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briann532
Please don't shoot me!!!
I know its been done thousands of times, but I just can't seem to get a definitive answer.
My GU 4 handbook states a tire size on 16 x 8jj rims as LT265/75R16
As a lot of others do, I run BFG 285/75R16's
NSW RTA state "The outside diameter of the wheel and tyre combination must be no more than 15mm over the largest diameter
wheel and tyre combination specified for the vehicle and not more than 15mm below the smallest diameter wheel
and tyre combination specified for the vehicle."
Since my aspect ratio is still 75%:
75% x 265 = 198.75
75% x 285 = 213.75
difference is 15 mm
Also since the NSW RTA states "Wheels up to 26mm wider than the largest optional wheel recommended by the vehicle manufacturer for the
vehicle can be fitted without the need to notify the RTA."
265 to 285 only 20mm.
Well within parameters.
Pardon my ignorance or lack of understanding if I'm off track, but does this not mean my tyres comply?
If so, why does everyone keep telling me otherwise???
Reply By: Member - Phil G (SA) - Wednesday, Mar 19, 2008 at 22:08
Wednesday, Mar 19, 2008 at 22:08
Brian,
This tyre law is ridiculous and was intended for smaller cars and not 4wds. The new ADRs (federal) have eliminated any reference to the 15mm rule, but the States have been very slow in catching on.
So when your tyres are half worn, they should be 100% legal :-)))
I personally would fit the 285's and not give it another thought.
No one has ever been nobbled for fitting 285's to a Patrol or LandCruiser.
Its extremely common and the tyre shops don't usually baulk at doing it.
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