Cars must comply with the official NSR technical rules (attached below), with the exception of rear tyres, which can be as follows:
- Rear Tyres – black NSR tyres with the part numbers listed below may be used.
- 19.5 x 13 slick
- 5284 – Supergrip Evo (standard equipment)
- 5285 – Ultragrip Evo
- 5320 – Extreme
- 19 x 13 slick low profile
- 5287 – Supergrip Evo
- 5288 – Ultragrip Evo
- 5321 – Extreme
- Can be glued & trued.
- The NSR marking must be clearly visible on at least one sidewall of both rear tyres.