The compound
Circo SC17.
The mildest compound Circo make, aimed at street and 4WD use. It works from ambient and tops out below 500°C, which makes it a road pad that tolerates the occasional hard drive rather than a track pad that tolerates the road.
Operating range0–490°C
Friction µ0.32–0.35
Cross-brand equivalents
Run something similar.
These are the compounds we stock for the Nissan Silvia / Skyline (standard calipers) whose published friction and operating temperature come closest to Circo SC17. They are a starting point for switching brands — not a guarantee of identical feel, because each manufacturer measures friction on their own equipment.
WinmaX W2
Very close0–550°Cµ 0.32–0.35
A street pad with a little more heat range than W1. Light trackday duty at most.
Matched on published friction and operating temperature.
From $259WinmaX W3
Close0–650°Cµ 0.34–0.37
WinmaX call this their most versatile pad: sportive street through to sprint racing. It is the W-series compound we stock most of.
Fits the same caliper
More pads for the Nissan Silvia / Skyline (standard calipers).
Pairs well with
