NA Class - Tyre Regulation

*Mk1 NA Class Announcement*

Following testing and with careful consideration, Miata Trophy has taken the decision to amend the control tyre for the NA Class (for Mk1 MX-5’s) only to be the Toyo Proxes TR1. These will be pre-buffed by supplier PolleySport to 4mm, with no further modification to the tyre allowed. The decision has been made in order to safeguard the reliability of cars, and enhance the driving experience.

The regulation will be amended to:

NA Class MK1: Toyo Proxes TR1, pre-buffed by the supplier to 4mm (with an allowance to also use non-buffed TR1 tyres in “extreme wet” conditions and only under prior advisement from the Clerk of the Course).