Each wheel and tyre must be fitted so that the upper part of the tyre, down to the flange over the wheel hub centre must be within the perimeter of the vehicle when viewed vertically from above.
The use of any tyre softening chemical or treatment on tyres is strictly prohibited and will result in immediate exclusion from the event.
Street Class Tyre
The tyre tread wear rating must be 120 or above and must be printed on the tyre or shown in manufacture documentation.
The tyre must be no wider than 265 for AWD and 275 for 2WD and must be printed on the tyre.
The following tyres are not allowed:
- Yokohama A052
- Bridgestone RE-71RS
- Nankang CR-S
- Michelin Cup 2
- Vitour Tempesta Wraith
- Vitour P1
- Hoosier Track Attack Pro
Club Spec Class Tyre
The tyre tread wear rating must be 120 or above and must be printed on the tyre or shown in manufacturer documentation.
The tyre must be no wider than 265 for AWD and 295 for 2WD and must be printed on the tyre.
Hot Hatch Class Tyre
The tyre tread wear rating must be 120 or above. The tread wear must be printed on the tyre or shown in manufacturer documentation.
The tyre must be no wider than a 275 specification. The width must be printed on the tyre.
Performance Class Tyre
The tyres must be Treaded R Compound Semi Slicks. Grooved semi slicks, grooved slicks or full slicks are not allowed. Lower specification street tyres are allowed.
Extreme Class Tyre
There are 3 options when selecting a tyre:
- Street Tyres (120 wear rate or greater): Free compound.
- Semi Slicks: Hard to Soft compounds are allowed.
- Full Slicks (including 2 groove semi): Hard to Medium compounds are allowed.
Sports Car Class Tyre
The tyre tread wear rating (TW) must be standard as delivered on the vehicle by the manufacturer, or 120 or above, and must be printed on the tyre or evidence provided.
The tyre width shall be within 15% on the front and 10% on the rear, of the standard manufacture listed size. The tyre size can be rounded up to the closest tyre manufacture tyre size (eg. 293.25 can be rounded to 295)
Tuner Class Tyre
The tyre tread wear rating must be 200 or above and must be printed on the tyre or shown in manufacturer documentation.
The tyre must be no wider than 265 for AWD unless specified larger by the OEM in which case the tyre must match the OEM size specification.
The tyre must be no wider than 295 for 2WD unless specified larger by the OEM in which case the tyre must match the OEM size specification.
Any vehicle over 1800kg may use a 325 tyre.