Porterfields various compounds are consistently a favorite with VAC's customers. R4-S last a very long time, dust much much less than BMW pads, and provide fantastic stopping characteristics for the high performance street car. They also make very little noise compared to some of the competitions hi-perf pads.
We have run Porterfields product for years on our street vehicles (and race vehicles, including our GT3 car) and have been so pleased we carried their product exclusively for many years.

VAC keeps a huge amount of BMW Porterfield pads in-stock at all times.

From Porterfield:
R4-S – For high performance and heavy-duty street conditions.
Perfect for prolonged everyday use while also being capable of tolerating the most severe street use without any fade. Rotor friendly of course.
The R4-S friction level will give you an impressive increase in stopping ability with very minimum pedal effort.
R4-S compound has the absolute lowest noise and dust levels, far below OEM equipment or any other high performance brake material. Good for autocrossing, some drivers schools, solo events, and rally’s. The R4-S compound is available for virtually any vehicle available in the US.
We also offer the R4-S in pad sizes for competition type calipers that are used under street driven conditions.

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