Australian vehicle standards stipulate that passenger car tyres must comply with the requirements of ADR 23.
ADR 23 also states that UNECE Regulation No. 30 is deemed equivalent to the technical requirements of ADR 23.
Thus, the easiest way of determining if a tyre complies with UNECE R30 (and hence ADR 23) is to check if it has an E-mark on the sidewall.
ADR 23 also states that passenger car tyres must have a marking on one sidewall indicating the week and year of manufacture.
There is nothing in the regulations that deals with a tyre's market availability or place of origin or manufacture.
If a tyre complies with the requirements of ADR 23 (as per above), then it can used on the public highway.
Australian roadworthy regulations stipulate that any replacement tyre fitted to a passenger vehicle built after 1972 must:
- be rated for a speed of at least 180 km/h; and
- have a load rating that is at least equivalent to those of the original tyres.
Note: a speed rating of 180 km/h corresponds to a speed symbol of S.
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