Pads for Brembo GT RD57 (D58 window).

1. Circo M207

   3 options · from $847

   The highest peak friction and highest peak temperature Circo publish — professional circuit racing, and it needs 250°C to come in.

   250–920°Cµ 0.45–0.56Needs heatcircuit · endurance

2. Circo M207E

   1 option · from $1426

   The endurance version of M207, aimed at 12-hour-plus races.

   150–900°Cµ 0.42–0.49Needs some heatendurance · circuit

3. WinmaX W7

   1 option · from $721

   The top of the W-series — professional circuit and rally use, and the highest friction WinmaX publish.

   100–850°Cµ 0.48–0.53Usable from coldcircuit · rally · endurance

4. Circo M127

   1 option · from $937

   Sprint and time-attack. More outright bite than M119, but it wants heat in it first.

   150–850°Cµ 0.45–0.55Needs some heatsprint · circuit

5. Circo M119

   4 options · from $605

   Circo’s sprint answer: around 0.5 friction from 50°C, so it works before the pads are hot. Rally and circuit.

   50–800°Cµ 0.48–0.51Usable from coldrally · circuit · sprint

6. WinmaX W6.5

   1 option · from $997

   The standout for sprints and hillclimbs: close to 0.5 friction from a 50°C floor, so it bites on lap one. WinmaX call it their best rally pad.

   50–800°Cµ 0.47–0.50Usable from coldrally · sprint · hillclimb · circuit

7. Circo S99

   2 options · from $932

   Entry-level racing and 2WD rally, working from cold up to 700°C.

   100–700°Cµ 0.40–0.43Usable from coldcircuit · rally

8. Circo S88

   2 options · from $942

   Street and entry-level trackday use — the step up from S83.

   0–650°Cµ 0.38–0.40Strong from coldstreet · trackday

9. WinmaX W3

   1 option · from $477

   WinmaX call this their most versatile pad: sportive street through to sprint racing. It is the W-series compound we stock most of.

   0–650°Cµ 0.34–0.37Strong from coldstreet · trackday · sprint · hillclimb

10. WinmaX W1

    1 option · from $400

    WinmaX’s street compound — quiet and low dust, and explicitly not intended for track use.

    0–500°Cµ 0.29–0.32Strong from coldstreet

Figures are the manufacturers’ own published data for each compound. Where a brand doesn’t publish a figure we say so rather than estimate it. From cold is our reading of each manufacturer’s published minimum operating temperature, not a separate rating they publish. Manufacturers test on their own equipment, so friction numbers are best compared within a brand rather than across brands. Not sure which suits your Brembo GT RD57 (D58 window) setup? Ask BuildBot or email us with your car, class and typical session length.