03-17-2024, 04:04 PM | #1 |
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Brake Refresh for Spring Track
Brake Refresh for spring track events. Unfortunately the metal rotors have a vibration that I can’t sort. It’s not awful and doesn’t impair braking, but I was hoping that new rotors would solve it. It hasn’t but the amount of cracking was unacceptable. Next step is blue calipers I guess. I can’t do $4000 rotors - each regularly.
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03-18-2024, 11:28 AM | #2 |
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Did you swap the pads?
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03-18-2024, 12:08 PM | #3 |
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Nope. These are the BMW Carbon Ceramic Pads, and were in fine shape. It was present with the prior Pagid RSL29's (I think that's the right nomenclature - endurance pads), and did not cure with new Carbon Ceramic Pads (which fit better).
I carry a spare set of pads for the track, and can replace on the fly. But considering it developed after I replaced carbon ceramic rotors with metal, and gets worse when the rotor is worn, I'm thinking the pad placement on the rotor is contributing. Could be wrong, but unknown at this time. Shawn |
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03-19-2024, 02:44 PM | #4 |
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You put these rotors up to the test! Well done.
I was always advised to swap pads with new rotors, I am considering swapping rotors soon but my pads have 70% life left or more. I am running isweep low dust pads... will I be alright reusing these pads on a new rotor? No track days for me lol
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03-20-2024, 11:55 AM | #5 | |
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03-26-2024, 01:42 AM | #6 | |
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03-26-2024, 05:44 AM | #7 | |
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03-26-2024, 09:02 AM | #8 |
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Interesting always wondered this. Thanks for the info I’ll be trying it out for sure
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03-26-2024, 04:18 PM | #9 | |
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It LOOKS LIKE the pad fit in the blue calipers and metal rotor it will fit, but cover the rotor with more toward the center (and maybe hang over the edge). I don't know yet. Shawn |
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03-26-2024, 04:21 PM | #10 | |
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03-27-2024, 12:22 PM | #12 |
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03-31-2024, 12:38 PM | #15 |
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After full install of F90 standard brakes on an M5 CS that the only options were red or gold on the carbon ceramics calipers I am convinced the difference between the calipers are minimal.
The corollary of that is that if you want carbon ceramics, unless you want it to be perfect (coding, and master cylinder) I think you’d only need a very small spacer between the caliper and steering knuckle to get it right. That’s the only difference I can find between the stock blue caliper and the carbon ceramic is the mounting boss is slightly taller on the carbons. Shawn |
04-02-2024, 11:53 AM | #16 |
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Thank you for this research!
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04-02-2024, 11:57 AM | #17 |
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04-02-2024, 06:52 PM | #18 |
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04-25-2024, 08:45 PM | #19 |
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Hey Shawn, can I ask what your best and average times are at VIR in the CS? Street tires?
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04-25-2024, 10:24 PM | #20 | |
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Usual times 2:10-2:12. Everything from 200 treadwears to Michelin Pilot Sport Cups. I’m out there for fun and consistency. The car probably has ten seconds a lap faster than I’m willing to push. I love my speed, but ragged edge around every corner has a predictable ending. Shawn |
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04-26-2024, 10:40 AM | #21 |
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When I did private instruction earlier this year at Thermal that was what my instructor focused me on: consistent lap times and not pushing the car for all it's worth. At first I thought I wanted to drive at 100%, but it really tires (haha) you out so much faster.
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04-26-2024, 11:09 AM | #22 | |
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