Emergency Preparedness Snohomish County Health Department, WA WinmaX W3 Performance Trackday Brake Pads. By far the most popular high performance cross over brake pad on today's market, WinmaX W3 brake pads are a semi steel based compound suitable for regular high performance driving and club level competition such as track day, drag, hill runs and more. Semi metallic properties mean this pad is popular for those looking to upgrade to exceptional performance without compromising too much comfort. A high initial bite from low temperatures right through to 650? gives your car next level performance and feel on the street and the track. This pad is ideal for: High Performance Street Use Track Days, Hill Climbs, Rally Serious enthusiast driving