I recently upgraded my brake system with this Copper Free brake pad and the difference in braking performance was noticeable right away. Even on wet roads, the stopping power was impressive. The lack of copper also means less dust buildup on my wheels, which is a huge plus. The ONLY downside is that they are a bit more expensive than some other options on the market. Overall, if you're looking for high-quality brake pads for your performance car, I definitely recommend giving these a try..