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BMW 3-Series (E90 E92) Forum
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2nd Trackday (and now 3rd) - This time vibrating brakes
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02-01-2018, 03:40 PM | #23 |
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If you wanna go track dayin regularly buy yourself an old 330 e46, strip it out & put some semi slicks on it, I did a few track days in my old e36 328i during the last year I had it as I wasn't bothered if I broke it & it was excellent fun
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E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle |
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02-01-2018, 04:37 PM | #24 | |
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Stock brakes will probably fade - it depends on use. Ferrodo DS2500 are excellent (and expensive) and should prevent fade. I've no experience of the other pads. |
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02-09-2018, 01:16 PM | #25 | |
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Do bear in mind though that these are heavy cars and that they road cars, not track cars. If you want to use it a lot on track, even with upgraded disks etc, the callipers will bend under stress eventually. AP racing is the business when it comes to BBK (big brake kit) for beemers but you're looking atvhe thick end of €5k. There is a reason why regular track goers run with Lotus and Caterhams) apart from the fact they are better to learn on on and perform in many respects far better, they are also a lot cheaper to run on track. BMW are awful money pits on track. Edit: Forgot to add DO NOT apply your handbrake after each session, leave it in gear and add block of wood under a wheel if necessary. You disk will be very hot and you'll boil fluid, leave pad deposit on the disk (sometimes the calliper sticks) melt the rubber hoses. And yes "warped disks" are bloody star trek nonsense. Never ever heard or experienced in track days with anyone I know. Last edited by ChawenHalo; 02-09-2018 at 01:31 PM.. |
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02-09-2018, 01:23 PM | #26 | |
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Anyway nice to see a fellow froggy on this UK forum |
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02-09-2018, 01:34 PM | #27 |
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02-09-2018, 03:24 PM | #28 |
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Speedo was buried at 160mph from about 5 miles back, chasing an German spec e60 M5 and I was running up right at redline. My exit came up really fast. car did well though. Took the m5 about 3 miles to pull about 300 yards on me. The shaky brakes bothered me more than the smell.
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2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit. 2011 328i Titan Silver M Sport "Franzel" <--Wife's car |
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02-11-2018, 12:23 PM | #29 | |
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02-11-2018, 03:13 PM | #30 | |
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G31 40ix M Sport
E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle |
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02-12-2018, 04:16 PM | #31 |
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02-13-2018, 04:50 AM | #32 |
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I'll put my hat in the ring here... I had a 156 JTD with 200bhp, and used Red Dot Racing grooved discs & OEM pads. A fantastic set up. I'm not sure of Red Dot are still trading, and I'm not sure who made their discs, but that was probably the best set-up I've had.
I used to do track days in my E46 330i, great fun as it was a debadged touring in fine fettle, so used to upset a lot of people - despite being a big heavy lump of a car! When it came to brakes, my set up was EBC discs, yellowstuff pads, goodridge hoses, ATE superblue fluid. The disc judder when hot was horrendous, to the point where they had to go after one track day. I have never touched EBC stuff since, nor will I ever again. I replaced those discs with Brembo's, and they were great. I'm going to have to do the brakes on my current E90 in the next few months, and whilst I've used Pagid gear for my road cars for the last few years, I'm not sure if they're up to track use. Recommendations for a road car with some occasional track use? |
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02-14-2018, 01:50 PM | #33 | |
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I think a dedicated track car still may be the way forward though. |
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02-15-2018, 04:35 AM | #34 |
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On my E30 M3, which see a little track use, but mainly used on the road, I'm using CL Brakes (Carbon Lorraine) RC5+ pads.
http://www.clbraking.co.uk/compounds Pros: Quiet-no squealing Clean- Compared to Ferodos I used before, the CL RC5+ produce less than half the dust. Good bite from cold No fade on track Firm pedal. Cons Expensive (ish) For an E90 Ł120+VAT Fr and Ł123+VAT Rear Noisy- they tend to rattle in my caliper (AP Racing) a little, but I don't have anti rattle springs, so this shouldn't be a problem on a road car. |
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02-16-2018, 12:06 PM | #35 | |
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02-16-2018, 12:08 PM | #36 |
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I'm going back for another trackday tomorrow to have another go. Will report back if the brakes still judder a lot. If so, I'll be saying goodbye to EBC and going for something else!
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02-16-2018, 03:06 PM | #37 |
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Did you have a look at your slider pins? The 335i has 'floating' callipers, they slide on the two pins that hold the calipers in place. The pins can get dirty & sticky. Not saying that's your issue but cleaning or changing the pins next time your doing your pads wouldn't do any harm.
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G31 40ix M Sport
E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle Last edited by Chappers 71; 02-16-2018 at 04:11 PM.. |
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02-16-2018, 03:32 PM | #38 | |
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2009 118i Monaco Blue "Maximillion"
2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit. 2011 328i Titan Silver M Sport "Franzel" <--Wife's car |
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02-16-2018, 04:26 PM | #39 | |
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02-18-2018, 07:51 AM | #40 |
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Was back at Oulton Park again yesterday, track was dry which was great, it allowed me to really push a lot more through the corners. Brakes once again were a let down, they last max 2 laps.
Differences from last time: I built up the temps more gradually and carefully when initially going out for each session then pushed on. First 'faster' lap brakes seemed ok, on the second the judder came back in a big way. I took a little more notice this time and could visibly see the steering wheel shaking in my hands coming up to braking points - not great. Did a good cool down lap, no handbrake on when at standstill but I knew this anyway. On the next session I repeated and got same results. One ok lap and then judder from then on. I could reduce the judder by doing a slow lap and then going faster again. But I could only get maybe 2-3 corners of braking before the judder came again. Pic of brakes after a session attached, excuse the caked on brake dust. Nothing to me looks abnormal. The visible lines are just brake pad deposits? Time for a new set up I think. Last edited by AD18; 02-18-2018 at 08:01 AM.. |
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02-18-2018, 10:39 AM | #41 |
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Pop it into a STS or other tyre place for a free brake test, they will tell you if your brakes are out of balance. I had the shuddering issue a while back, turned out the front passenger side was out of ballance. I fitted a pair of new front discs & all's been fine since, granted I don't regularly do track days, although I did six laps at Lydd using red stuff pads with no issues.
If you do change the pads/discs maybe buy a new set slider pins, just don't grease them
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G31 40ix M Sport
E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle Last edited by Chappers 71; 02-18-2018 at 10:47 AM.. |
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02-18-2018, 01:16 PM | #42 |
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So I'm going out again soon with the same yellowstuffs as last time, but with drilled and grooved discs.
If I still get vibration then no doubt it's the pads, however contrary to popular belief I do believe the discs warp or have some sort of malfunction under strain, particular cheaper sets. |
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02-19-2018, 12:48 PM | #43 | |
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02-19-2018, 12:59 PM | #44 |
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Brake pad deposits
On the subject of pad deposits, how exactly does a cool down lap stop pad deposits on the discs? Surely during your hot laps, this is when pad material will be deposited. You do a cool down lap, enter the pits and don't apply the handbrake, this to me is most critical step for avoiding pad deposits.
Unless I'm misunderstanding I'm not seeing what this cool down lap really does. |
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brakes, ebc, trackday, vibration, yellowstuff |
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