Quote:
Originally Posted by chris_flies
These are with F30 335i Brembos on my 128i. It's a fairly popular mod, so I thought it relevant. I believe these pads are also available in 135i and 128i fitments.
Pad: Porterfield R4
Suggested Use: Track Days, Time Trials, Racing
Rotor: Stoptech Sport Slotted 340x30mm
Fluid: ATE Type 200
Dust: Moderate
Actual Use: Track Days
Rating for Use: Excellent. Wear is extremely slow, they seem very friendly to rotors, and are compound-compatible with the street-oriented R4-S, making for easy swaps between pads.
Pad: Porterfield R4-S
Suggested Use: "Enthusiastic" Street Driving
Rotor: Stoptech Sport Slotted 340x30mm
Fluid: ATE Type 200
Dust: Extremely Light
Actual Use: Very "Enthusiastic" Street Driving
Rating for Use: Low dust, smooth, and quiet. Compound-compatible with the track-oriented R4 which makes pad swaps very easy.
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Porterfield R4-S, what a wonderful street pad!
