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09-12-2014, 09:46 AM | #67 | |
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Mine is a Jun '08 delivery; no reliability issues whatsoever. |
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09-12-2014, 10:18 AM | #68 | |
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bad, misleading post/info to any prospective buyer. Yes DCT has proven to be very reliable, but in no way could it ever be as reliable as the simpler manual. |
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09-12-2014, 11:24 AM | #69 |
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I shyed away from anything BMW but my internet and word of mouth researching allowed me the peace of mind to purchase a DCT e92 M.
There are very few posts of people who have had transmission failures. There are more people throwing around the $13k replacement cost figure than there are actual failures. The failures that occurred seem to be either due to abuse (heavily modified) or factory defect (replaced within ~10k from delivery under warranty). Either way, getrag has made some of the best, most reliable transmissions for decades and they make an excellent (the best?) dual clutch box in our cars and I wouldn't have my M3 without it. |
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09-12-2014, 11:35 AM | #70 | |
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DCT appears to have fewer/no true wear parts compared to a manual transmission. No clutches, synchros, etc. that will wear out (theoretically they will wear out, but long after the car is worn out). Because the transmission completes the shift for you, it's a consistent shift everytime and less/no chance for premature wear like a third pedal. Someone who dumps the clutch, rides the clutch pedal, or simply isn't very good at a stickshift will wear out a 6spd faster than they would a DCT. I know it's a technicality, but the proverbial moneyshift is a quite literal way that a DCT is more reliable than a manual. DCT won't let you complete the downshift. A manual will. |
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09-12-2014, 01:39 PM | #71 | |
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mechanically speaking one has more parts and computers working it. My gear shift works via levers, yours works via electronics. |
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09-12-2014, 04:05 PM | #72 | |
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Given that the number of DCT cars far exceed the number of manuals all point to the DCT being significantly more reliable. The MT may be simpler but its still more likely to break. |
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09-12-2014, 05:23 PM | #73 |
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10-06-2014, 06:45 PM | #74 |
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2013 N55 135i DCT - FBO and stg1 turbo upgrade. DCT slipping. Talked with Dinan regarding their stage4 flash and Alex @ Alpina regarding anything he can do. The non-M DCT doesnt handle >450tq well at all. Now I cannot even run more than 15psi if WOT shifting through gear above 3rd @ 6500rpms...
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10-06-2014, 06:50 PM | #75 | |
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Seveal DCT owners with SC's stated it did not slip and a stock DCT could handle all the torque you could throw at it, but we know better don't we http://www.m3post.com/forums/showthr...+power&page=20 Last edited by m3ray; 10-06-2014 at 06:59 PM.. |
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10-06-2014, 07:10 PM | #76 | |
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Seems that any 2012+ N55 with DCT without a DME flash slips. Piggybacks are great for power on a new vehicle but I know now the cons of this type of tune. the DME itself still reads 4-5psi when I'm running 16-19psi and the clutch packs are definitely not happy! |
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10-06-2014, 08:50 PM | #78 |
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i talked to a BMW technician that has been working on them for 17yrs, and he has never had a M3 DCT come in from having problems or having to be replaced.
I do know that there are some owners on forums that had some issues, and got it replaced. But the majority of them where still in the break-in period or a half year in. So pretty much "things go wrong" and "not everything is going to be perfect" but from what i have seen and heard? I would say the DCT is strongly reliable. |
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10-07-2014, 02:27 AM | #80 | |
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Clutch slip is a non issue for stock M3 DCTs. |
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10-07-2014, 07:55 AM | #81 | |
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If you throw enough torque at a DCT, it will slip, period. Just so happens that its the tuned turbo engines which make that much torque. |
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10-07-2014, 08:21 AM | #82 | |
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The discussion was never about how much torque it can hold without slipping.
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10-07-2014, 09:21 AM | #83 |
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The initial discussion wasn't but the last few posts have been. Go back and re-read them. Slippage on a stock DCT for either s65, n55, or n54 is a non-issue. When you tune the torque up, it is.
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10-07-2014, 10:22 AM | #84 |
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Yea, it was settled a while back. No one brought it up again since iuhutch and his FBO 335is did.
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10-15-2014, 08:49 PM | #85 |
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Drives: 328it, RIP M3, E46 Sold
Join Date: Jan 2006
Location: 39°27'33"N 77°58'04"W W. Virgina, Kansas
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11-12-2014, 10:55 AM | #87 | |
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