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08-01-2018, 08:14 AM | #46 |
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I'm exaggerating to make a point, but over-cooling your brakes or picking a pad compound with an MOT that's too high is not something I made up.
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08-01-2018, 11:06 AM | #48 |
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Well, I'm running all day in 110+ degree weather with 2 dozen track days on the M3's stock calipers and rotors. I have 20 years of on track experience so I'm not a noob to track days and brakes.
But yes, continue to waste money on brake upgrades that are not needed - it's your money and you can spend it as you like.
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08-01-2018, 11:41 AM | #49 |
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On the topic of mushy pedal, also check the ABS/DSC pump module. I spent thousands on fluid, new brake booster, new master cylinder, etc only to find out after 2 years that my ABS pump was leaking. There was zero fluid loss but it was slowly weeping fluid, but also losing pedal pressure and allowing air to get in which caused mushy pedal feel.
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08-01-2018, 10:58 PM | #51 | |
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Now I totally look back on my overheating stock brakes with shame and an overwhelming feeling of your superiority and my years of wasted money. |
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08-01-2018, 11:21 PM | #52 |
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At 5:22 - 5:50, Chris Harris clearly displays his inferiority as someone who loses his E92 brakes. He should join me in shame of inexperience. |
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08-02-2018, 06:55 AM | #53 | |
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08-02-2018, 11:27 AM | #54 | |
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Thanks for the sarcasm, but 20 years of tracking is not with the M3. The M3 hasn't even been out that long. I've 2 dozen on the M3 since I got it. Prior to that, I've driven many more track days in other cars. Some had BBK upgrades, others ran stock brakes on track. It really depends on the car. The M3 didn't need a BBK to run any of the tracks I've been to. But if spending money makes you happy, go for it!
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08-02-2018, 11:34 AM | #55 |
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Braking into Turn 2 is hard on the brakes. The pedal gets a bit mushy towards the end of a session. Pads are fine and hold up for 4-5 Laguna track days. I run Endless brake fluid and Project Mu Club Racer pads.
My expenses are usually brake fluid flush every few track days and a set of front pads every year. That's about $400 in brake consumables a year. Front rotors I'll replace every 2-3 years. With FCP lifetime warranty, it costs me about $200 for OEM rotors including shipping costs. Rear brakes, I've only had to change the pads once. Been running the same stock rear rotors for 6+ years now.
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08-02-2018, 11:51 AM | #56 |
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Driver technique has a lot to do with how brakes perform and their durability. I think this is somewhat apples to oranges.
Some drivers can make the stock brakes work on track, others will burn them up in one session.
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08-02-2018, 07:13 PM | #57 | |
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PIR here has 2 long straights (130mph, 150mph) in a 1:25 lap and there are multiple 40-60mph turns in between. I tend to get after lap times (yes, I know a HPDE is not the place for that) and walk on ABS up to my trail braking when I can. There are many others who I drive with that run 5 seconds slower but never overheat anything nor go through brakes. They brake 100-200 ft earlier in the big two straights... I understand they are having fun, but it's not something I'd enjoy as much working on tenths. I bought the M3 exclusively for AutoX (STU) competition and track days. We sold a GT3 and picked up a 991TTS that we don't track because the GT3 was too much $ liability for chasing tenths. I too have done more than X track days, but I don't think that matters. We're "in line" at the local dealership for a GT3RS. Unfortunately that line is long enough that it will arrive approximately when the M3 is worn out. We'll be prepared for the $$$ liability then as well. It will be, like the TTS, fine with stock brakes. Last edited by Visceral; 08-02-2018 at 07:29 PM.. |
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04-16-2019, 11:13 PM | #58 | |
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That being said, I expect a slight change in brake bias due to difference in piston surface area. I am also presuming it will need some adjustments to make it track-adequate. Will check with temp stickers how these perform vs. stock system running identical pads.
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