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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 Tue, Nov-17-2009, 01:47:21 AM   #1
terfer
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Default SMG Clutch

How long does a clutch on a SMG usually last? I've tried searching but couldn't really pull anything up. How can you really abuse a clutch on a SMG if the computer controls it electronically? Sorry for the newb question. Thanks in advance!
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Old Tue, Nov-17-2009, 03:40:35 AM   #2
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I have read online that it should last longer than a conventional manual because of the consistency of the computer / actuator. Seems to make sense to me but who knows.
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Old Tue, Nov-17-2009, 04:08:40 AM   #3
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the car i bought had a clutch put in at 50k not because the disk but the clutch release bearing was smoked!
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Old Tue, Nov-17-2009, 06:24:00 AM   #4
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I've been wondering this myself..
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Old Tue, Nov-17-2009, 06:34:45 AM   #5
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My dealer says he has yet to replace one. Mine is fine at 45k. If you drive around whacking it in S5 and S6 all the time, you will probably damage something down the drivetrain before the clutch. Perhaps if you are always holding it on a grade with the gas rather than the brake, you might accelerate wear. Whatever, it is much easier to burn it with a 6MT than SMG.
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Old Tue, Nov-17-2009, 08:48:04 AM   #6
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Great question! I had been wondering this since i hit 41k this morning.
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Old Tue, Nov-17-2009, 10:44:59 AM   #7
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I have 87K miles on mine and going strong.

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Old Tue, Nov-17-2009, 11:16:57 AM   #8
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I sold mine with just over 70,000 miles on it. I noticed that the clutch started slipping and the transmission light came on once. It turned off after a bit, but the dealer said it would probably need a new clutch soon. Good thing my E90 came in before I had to shell out big bucks to replace the clutch. I drive in S4 or S5 most of the time. The quick shifts reduce the amount of feathering on the clutch. I'm pretty sure the SMG clutch lasts longer than manual clutch.

I'm almost certain the DCT clutch will last even longer due to the fact the higher gear is already engaged. Shifting simply involves disengaging the clutch in the lower gear and engaging it into the next higher gear. Shifting is super smoothe compared to the SMG tranny.
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Old Tue, Nov-17-2009, 04:24:21 PM   #9
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Thanks for the info!
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Old Tue, Nov-17-2009, 05:19:01 PM   #10
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I replaced mine at around 92k because the pressure plate broke but the clutch itself still had plenty of life left.....
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Discussing SMG Clutch 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)