The new W6.5 compound is derived from the popular W7 compound.
W7 compound is professional class brake pad that have the highest heat tolerance and effectiveness in the Winmax range with very high torque.
The W6.5 compound improves the low temperature effectiveness and initial response. This allows for better initial bite, and better modulation even with lower brake temps. For Time Attack cars, this is great news as you typically need the brakes to be effective within the first warm up lap as you only get about 2 or 3 hot laps then a cool down lap. This would also be beneficial for cars that are light weight with high down force.
Termperature range: 50 ~ 800 Degrees celcius
Average Mu: 0.47 ~ 0.50 Mu