Anybody have first hand experience with Porterfield R4S brake pads? I have been using Ferodo DS3000 with my AP front & rear setup on the track. Do to the Ferodos being in short supply I found these to fit the 6 piston units. The description says that they are a street / autocross / rally pad, how are they on the track? How are they on the street?

Thanks for your thoughts.

 

I've used them quite a bit. They are an improvement over something like a stock pad. They've got a little more bite and have low dust / noise. Modulation is very good. They work well for autox and spitired driving, but I wouldn't use them on the track. I've crumbled them to dust in just a couple of sessions.