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Old 08-04-2017, 09:21 PM   #1
windwagen
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Clutch Protector



A friend of mine has a 435 x drive, 6sp manual, 70,000 km. Recently, the clutch failed completely... you can engage any gear with the engine running without using the clutch pedal. Clutch pedal feel was light too.

I drove that car 2 days before and the clutch was 100% fine. Owner said that it went from perfectly fine to not driveable within a few km.

He towed it to a BMW dealer. They say the clutch is completely worn. Apparently the F30 has some mechanism that protects the flywheel by preventing contact with the clutch disc rivets. The trade off is what happened above. Usually a worn clutch would slip in higher gears which is a pretty clear symptom.... this protection mechanism is pretty lame if it's going to leave you stranded.

Anyone know if this is true? I wasn't able to find anything on the web. Sounds fishy to me, like they're dodging a warranty claim.
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Old 03-18-2018, 01:10 AM   #2
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Hey what was the result of this? I have the same issue 2014 328 6 speed after 62000 and I need to replace the clutch.
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Old 03-18-2018, 02:14 AM   #3
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Damn. Two F series cars needing a new clutch at only 60k KM? Lol BMW, oh how far they've fallen... My E46 was on its original clutch with no issues til 250k. My E90 is at 241k and it grabs perfectly fine. What the hell is going on with these F series cars??
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Old 03-18-2018, 07:58 AM   #4
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I saw the original clutch after it was replaced. It wasn't worn...it was disintegrated. In retrospect, the dealer was probably being kind using the words "wornout" rather than "abused" or "blown" or "F%$#ed"

I know the driver has dumped the clutch a few times. Personally, I think he's done it more than he's letting on. Since the car is AWD, wheelspin is almost non-existent so the clutch takes ALL the abuse.

The sudden loss of function was caused by the friction material FALLING OFF the core of the disc.

I NEVER dump the clutch in my cars...what for? 335 and 435 shouldn't have to either... A civic, maybe....but these are powerful cars that are quick without having to drive like "that".
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Old 03-18-2018, 07:16 PM   #5
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I have 230k KM on my E46's original clutch, including autocross and track miles. Clutch is still 100%.
Most BMW enthusiasts remove the clutch delay valve (CDV) which stops the clutch from engaging quickly, causing excessive clutch wear and a mushy clutch.
Mine was removed shortly after I got it around 50k KM.

I see lots of people that don't know how to drive manual properly. They ride the clutch in traffic, or at lights, or on hills. Morons.
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Old 03-19-2018, 08:46 AM   #6
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Quote:
Originally Posted by dbworld4k View Post
Damn. Two F series cars needing a new clutch at only 60k KM? Lol BMW, oh how far they've fallen... My E46 was on its original clutch with no issues til 250k. My E90 is at 241k and it grabs perfectly fine. What the hell is going on with these F series cars??
Don't put any blame on BMW. This is a coincidence.

BMW doesn't make their clutches. LUK/Sachs does, and they're making them nearly exactly the same way as they always have, just lighter.

This is certainly caused by driving style. There's nothing wrong with the F-series clutches.


Quote:
Originally Posted by jabela View Post
I see lots of people that don't know how to drive manual properly. They ride the clutch in traffic, or at lights, or on hills. Morons.
This. The fact the clutch "disintegrated" usually means it's seen some serious heat.
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Old 03-19-2018, 12:48 PM   #7
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Eh, it didn't seem at all surprising given how many corners BMW has cut in building the F series cars compared to the predecessors. Sure, maybe this is just a coincidence after all.

In any case, BMW specifies to their suppliers how they want their parts built, so in the event of compromised build quality (not necessarily pertaining to clutches), BMW would be equally to blame.
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