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State by State - Tyre & Lift Regulations

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  • #16
    Originally posted by Dreamer View Post
    Unless I'm missing something:

    265/65 x 17 overall diameter = 776mm approx.

    265/70 x 17 overall diameter = 804mm approx.

    Difference = 28mm = 3.6% - which is under the 7% legal maximum quoted above, and therefore OK in NSW.
    i guess I missed the boat on that one. Awesome, 70 series it will be then.
    [CENTER][B][U]Matt
    [/U][/B]2012 Silver GXL TD 6 Speed manual with some stuff..
    [/CENTER]
    [CENTER][SIZE=2]My 2008 Lifestyle 360i camper - [URL]http://myswag.org/forum/index.php?topic=21797.0[/URL]
    My 4WD Action write up 2004 120 V6 Prado - [URL]http://www.4wdaction.com.au/articles/2012/complete-package[/URL][/SIZE][/CENTER]
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    • #17
      NSW has updated ride height regulations 50 mm Suspension + 25mm wheel / tyre meaning total increase without certification in now 75 MM

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      • #18
        That sounds like a 265 70 tyre is now legal in NSW?
        Greg - 08 D4D Prado,
        Some trips done - Cape York, Fraser Island, Simpson Desert / Central Aust, Vic High Country.

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        • #19
          Originally posted by Corigator View Post
          That sounds like a 265 70 tyre is now legal in NSW?
          Make that 285/70R17.

          When is this confirmed to be legal?

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          • #20
            Originally posted by amts View Post
            Make that 285/70R17.

            When is this confirmed to be legal?
            Quote from the Minister

            "I’m delighted to announce I’ve approved for gazettal two new light vehicle standards. The first is titled the Light Vehicle Modifications Manual – Suspension an...d Ride Height (also known as the ‘Suspension Manual’), while the second is called the Vehicle Standards Information 60: Carrying Motorised Mobility Devices and Motor Cycles on Vehicles.
            These standards were developed by the NSW Vehicle Standards Working Group, a committee I established in 2012 to allow motor enthusiasts direct input in formulating vehicle-related policies and regulations in NSW."

            I think that means as of Now.

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            • #21
              In SA you can go 50mm larger with tyres. It's on the govt. website under "suspension Modifications" rather than the "wheels and tyres" heading where you'd assume it would be.

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              • #22
                Originally posted by olly120 View Post
                In SA you can go 50mm larger with tyres. It's on the govt. website under "suspension Modifications" rather than the "wheels and tyres" heading where you'd assume it would be.
                Finally found it. Couldn't find it when you notified me earlier. Thank you.

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                • #23
                  The ride height of the vehicle may also change if tyres and rims are installed that are greater in diameter than those specified on the vehicle's tyre placard.

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                  • #24
                    Excellent thread, Andrew. Please include track changes in it as well. Additionally, those Queensland specifications only apply to cars without ESC; those with ESC are only allowed to lift their tyres by a maximum of 75mm overall (and I haven't checked in a while). When I have an opportunity, I'll check once more.
                    Last edited by RJami1; 22-12-2022, 07:48 AM.

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                    • #25
                      Originally posted by Guest View Post
                      NSW

                      http://www.rms.nsw.gov.au/documents/...si-09-rev4.pdf
                      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.

                      http://www.rms.nsw.gov.au/documents/...ifications.pdf
                      Altering vehicle ride height by more than one third of the manufacturer’s suspension travel in the direction of the ride height change.

                      Examples requiring certification:
                      • Conversion from coil to leaf springs.
                      • Any modification to the suspension configuration.
                      • Fitting a suspension of a different design eg from a different make and model (eg from coil springs to leaf springs).
                      • Fabrication of suspension mounting points.

                      Examples not requiring certification:
                      • Modification of suspension with components or parts which meet or exceed the original vehicle manufacturer’s specifications.
                      • Fitting uprated roll (sway) bars, shock absorbers, springs, struts or manufacturer’s options for that particular year make and model.

                      Replacement of tyres that change tyre overall diameter by more than 7% of the overall original diameter*.
                      * ’overall original diameter’ means the maximum outside diameter of the largest tyre specified by the vehicle’s original manufacturer as an option for the vehicle, as shown on the vehicle’s tyre placard.

                      Example requiring certification:
                      • Replacing 215/65R17 (712 mm overall diameter) tyres with 265/65R17 (776 mm overall diameter) tyres, an increase in overall diameter of 64 mm, or 8%.

                      Example not requiring certification:
                      • Replacing 215/65R17 (712 mm overall diameter) tyres with 235/65R17 (738 mm overall diameter) tyres, an increase in overall diameter of 26 mm, or 4%.

                      Tip: To determine if the tyres you have selected require certification you need to look at the tyre placard fitted to the vehicle by the manufacturer. Sometimes the tyre placard will show more than one tyre size, allowing optional tyres of that size to be fitted. If one of the tyre sizes marked on the placard (eg 215/65R17) matches the marking on thetyre sidewalls, certification is not required.

                      Replacement of wheels where the rim width exceeds the largest wheel combination specified by the manufacturer by greater than 25 mm.

                      Example requiring certification:
                      • Fitting a wheel with a width of greater than 225 mm, when the greatest wheel width specified by the manufacturer is 195 mm.

                      Example not requiring certification:
                      • Fitting a wheel with a width of 205 mm, when the greatest wheel width specified by the manufacturer is 195 mm.

                      Tip: Refer to VSI No.9 Guidelines for alternative wheels and tyres for more information

                      Replacement of wheels and tyres where the wheel and tyre combination does not comply with the manufacturer’s minimum load carrying capacity specifications.

                      Example requiring certification:
                      • Fitting car tyres to a van or any goods-carrying vehicle for which ‘light truck‘ rated tyres are specified.

                      Tip: The manufacturer’s minimum load carrying specifications will be detailed on thetyre placard fitted to the vehicle.
                      Hi guys
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                      • #26
                        Hi Guys,
                        Apologies, but providing a comprehensive state-by-state breakdown of the tire and lift regulations within a 50-word limit is not feasible. These regulations vary significantly across states in the United States, covering aspects such as tire tread depth, tire size, lift height, and other modifications. It is advisable to consult individual state DMV websites or contact local authorities for accurate and up-to-date information on specific regulations.

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                        • #27
                          As long as they were produced as replacement units for the specified vehicle type and have appropriate mountings and dimensions, replacement shock absorbers (including struts and strut inserts) may be installed without prior authorisation.


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