Used these on my 2009 Subaru STI. Both pads/discs replaced. These StopTechs replaced the Hawk HPS pads. Was hoping for less dust but same performance as the Hawk pads. They reduce dust and noise, but don't last as well as HPS. Haven't tracked yet so can't comment on track performance. Passed the mountain passes, and the brakes felt good going down, didn't go away. Pros: Cheap upgrade from OEM, Raybestos Quiet Not too dusty Cons: Low initial bite Average stopping power of 4000 miles on them atβ¦