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  • Tyre Speed ratings

    Hello all.

    I have a 2015 GX Auto & after much research I've talked myself into down the track getting the TOYO Open Country AT 2's. That was until I noticed on the tyre placard that it says that my car has to have a minimum speed rating of S.

    The TOYO's in 265/65/17 LT only come in R 170km/HR vs S 180km/HR stipulated on the placard.

    This is what the SA Government site says.

    "The speed rating of the tyres fitted to vehicles for off-road must be of at least 140 km/h ('N') when the tyre placard requires a higher speed rating than 'N'.
    The speed rating of the tyres fitted to a passenger vehicle must be at least 180 km/h ('S') when the tyre placard requires a higher speed rating than 'S', for all other vehicles a speed rating of at least 120 km/h applies ('L')."

    I'm a bit confused, anyone put R or less rated tyres on?

    http://www.sa.gov.au/topics/driving-...eels-and-tyres

    http://toyotires.com.au/tyres/suv-4x...country-a-t-ii

  • #2
    Just to add to that.

    TOYO does a 265/70/17 with a S rating but it falls outside the SA Government's diameter criteria.

    " The overall diameter of a wheel and tyre fitted to a vehicle must not be more than 15 mm greater than the largest tyre size listed on the tyre placard and not more than 15 mm less than the smallest tyre size listed on the placard."

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