by admin on December 4, 2009
I am going to buy a 325i with the 4L30E transmission,this is the automatic with a manual mode, and I don’t want to learn how not to use it and end up buying a new one. If anyone can give me a link or if you own one yourself any help would be appreciated.
By the way its 1992 325i.
I want to know how to use the damn thing not get someones opinion about it.
I have the same transmission in my ‘98 Z3. The trans has manual mode, sport mode, and "normal" mode. In manual mode, the transmission stays in whatever gear you have selected on the lever. It does not down shift or up shift. If you have it in 3rd and stop the car, it tries to take off in 3rd. If you up shift it manually, it has the normal delay – it isn’t instant. If you try to shift on the engine redline, then you have to shift "early" to allow for the delay and avoid hitting the rev limiter.
I prefer sport mode (selector on "3"). The trans stays in gear longer before up shifting. If you accelerate full throttle (in sport mode), the trans will shift right on the engine redline (at least mine does). Sport mode is also good for small autocross type courses – it seems to select the proper gear most of the time.
I don’t use manual mode very much, mainly because of the shifter – which does not have an indicator in the instrument panel, and does not have a stop for each gear, or neutral. If you lose track of which gear you are in, you have to look down at the shifter – and it’s easy to up shift 2 gears (or into neutral) if you aren’t real careful.
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by admin on November 28, 2009
Since the M6 and M5 both have 7-speed SMGs, does the new BMW M3 have it in another name – M Double Clutch Transmission with Drivelogic? (aside from the manual transmission, of course).
The transmission in the new M3 is called M DCT (Dual clutch transmission) It is a form of of direct shift gearbox (DSG) just now has better technology and dual clutch.
Read to the bottom of this link, where it mentions the M3
http://en.wikipedia.org/wiki/Twin-clutch_gearbox
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by admin on November 28, 2009
Just wandering if the SMG transmission on a BMW M3 is good.
And if it could reach 170k miles easy without any major service.
The reason I was interested in it because it has a automatic option in which my mom could drive in case of emergency.
Some people say that the regular manual transmission is better?
Frankly, the jury is still out on SMG’s. But so far so good…
Remember that they are manual transmissions basically with
automated shifting, and that they had only been in widespread use for approximately 8 years. It has now progressed from SMG I
to II to III ( the latest).
To say that it is not durable is baloney. Same thing with being rough
in normal city use and being fit only for the track. Rumor mongering from people who have never had much or any experience with SMG’s. Or who do not know how to use an SMG.
Normally, the defects would be the same as any manual transmission.
Ocassionally (but rarely) you would see the hydraulic pump or the gear shift sensor taking a dive. More often (but still rare) is oil leaking
from the SMG shifter mechanism (not the tranny). Theoretically, the SMG module could quit but I have yet to see one do it.
But to guarantee that it would last 170K miles is asking too much. Even BMW would not go as far as that. What car manufacturer would
guarantee their transmissions up to 170K ?
EDIT:
To compare the automatic transmission of a 335 or any car for that matter to an SMG simply misses the point. Any automatic transmission can never perform better than a manual or a manual with SMG in the hands of a good driver.
SMG is not meant for boys. Ladies maybe.
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by admin on November 28, 2009
I am about to buy a BMW M5 with manual transmission and I was wondering if it is possible to convert it from manual to auto or automanual? If so, where can I get it done? How much will it cost?
Harley guy has no f*cking idea what he’s talking about. It can be done, but it would cost an insane amount of money. The base e39 transmission does not mount up to the S62 V8 in the M5, so it would need custom adapters to fit, a custom driveshaft would be needed, and adapters like the Guibo disc would need to be modified to work along with the driveshaft. At the very least you’re looking at $1000 for a used e39 tranny w/o shipping, custom driveshafts can be had for around $500, custom fit guibo $?, all the interior mods (auto shift knob, computers, etc…), and then the labor involved. A project like that could easily reach over $5000. Not worth it IMO. The M5 is a true sports car, it wasn’t meant to get a granny tranny…
***Thanks for the thumbs down 
This has been discussed on the forums hundreds of times, I know what I’m talking about here.
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