The compound
Circo S85L.
A purpose-built low-friction rear pad for front-drive TCR cars. The low friction is the point, not a limitation: it is there to stop the rear axle over-braking on a car that does almost all its stopping at the front.
Operating range0–500°C
Friction µ0.24–0.30
Cross-brand equivalents
Run something similar.
These are the compounds we stock for the Mazda RX8 rear whose published friction and operating temperature come closest to Circo S85L. They are a starting point for switching brands — not a guarantee of identical feel, because each manufacturer measures friction on their own equipment.
WinmaX W1
Close0–500°Cµ 0.29–0.32
WinmaX’s street compound — quiet and low dust, and explicitly not intended for track use.
Matched on published friction and operating temperature.
From $227Fits the same caliper
More pads for the Mazda RX8 rear.
Pairs well with
