Brakes

Porterfield R4 vs R4-S Brake Pad Comparison (Part 1)

Porterfield R4 vs R4-S Brake Pad Comparison (Part 1)

Brake pads vary greatly in a few key ways. Initial bite, braking performance when cold or hot, rotor "friendliness" (how much they chew up brake rotors), dust, and noise are the main concerns for most of us that pay attention to such things. I've been running Porterfield's R4-S brake pads on my V8 Vantage for several months, including track days, and today I'm swapping them out for the more track-oriented R4 pad.