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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Aug-21-2019, 04:10:49 PM   #11
ctdriver86
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Default Re: Porterfield R4-S Pads OK on Track?

That sounds about right. These pads are pretty good at helping you learn how to trail brake, it has good modulation. So it depends on your driving style. Brake modulation is important at getting faster.

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Originally Posted by M3_Pilot View Post
I used the R4-S at Auto Club Speedway for the first time at Bimmerfest 2019. They were very interesting.

Brake fade exists, but you can push through it. The most difficult part of these pads for me was getting used to the bite. Textar pads have a strong initial bite, where these pads have a weak initial bite (relatively speaking) and not as linear as I'd love them to be.

Overall, I was pleased how well they performed at auto club. I was continuously getting faster lap times as I trusted them more right before I encountered fuel starvation.
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Old Wed, Aug-21-2019, 05:07:12 PM   #12
Obioban
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Default Re: Porterfield R4-S Pads OK on Track?

Double duty pads is a battle everyone loses sooner or later. It's not just possible once you get to a certain level of pace.

It's not that much more work to change out pads, once you're changing wheels/tires for track use. Once you move off tracking on street tires, it's time for dedicated track pads IMO.
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Old Wed, Aug-21-2019, 05:51:05 PM   #13
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Default Re: Porterfield R4-S Pads OK on Track?

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Double duty pads is a battle everyone loses sooner or later. It's not just possible once you get to a certain level of pace.

It's not that much more work to change out pads, once you're changing wheels/tires for track use. Once you move off tracking on street tires, it's time for dedicated track pads IMO.
I think I was reaching their limit toward the end of the day. But they still performed great for my pace.

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Discussing Porterfield R4-S Pads OK on Track? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)