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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > How quick are gear changes on automatics?



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      07-19-2019, 06:02 AM   #1
HMP
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How quick are gear changes on automatics?

Curious how quick the gear shifts are on an automatic once you hit the paddle shifter levers.

Im hunting for an E91, and while I really want RWD and 6MT, Im starting to think I might need to give up on one of those and compromise. So that's why Ive asked about the xdrive on another thread and here asking the speed of the automatic shifts when you select the next gear on the paddle shifter.

I ask because on my DD, which is a ford automatic with select shift in 'sport mode' it takes a second, not very quick at all, in my opinion.
But Ive been in some cars, like the Infiniti G37 and was satisfied with its speed

Just thinking about sporting backroad drives
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      07-19-2019, 06:32 AM   #2
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So there are 2 automatics they used in the E series cars, the ZF 6 speed and the GM 6 speed. The ZF is not too bad, I think they advertised 100ms shift speed (but doesn't feel that fast). The GM 6 speed is a lazy slow thing usually found in the 328 and the 335 usually received the ZF. Not sure if you do xdrive as in the E46 awd got you the gm trans, but in the E90 pretty sure you get the ZF.

The ZF 6 speed is one of the great automatics, it is good stock but you have XHP tuning for it that will make it shift like a DCT so it is truly excellent with an XHP tune on the trans and that can be done with an android device at home for a few hundred bucks!
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      07-19-2019, 06:44 AM   #3
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The ZF trans with the xhp tune shifts are really fast and crisp. Iím running stage 2...

You can see what trans a certain e90 has on realoem.com if you have the vin or the build month...
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      07-19-2019, 06:48 AM   #4
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I think the gm shifting is pretty quick, easy quicker than my old passat. It shifts faster than I can manually shift, but then again, I'm not a racer
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      07-19-2019, 08:03 AM   #5
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the gm transmission is not atrocious.

and since you're e91 shopping, that's likely what you're gonna get cause 328.

the plus side is that it's dirt cheap to keep maintained. no fancy zf fluid that costs.
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      07-19-2019, 08:13 AM   #6
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Only ZF trans are found in the 335's. ZF trans are very stout and will last a very long time, if properly maintained.

The age of solenoids in the trans will ultimately determine how fast the trans will shift and the trans' overall health.

Fortunately, the cost of new solenoids has come down a lot, in the last year. I think you can refurbish the solenoids, the various megatronic sleeves and the like for around $275.00 or so. This is of course plus the cost of a new pan filter & trans oil of course.

Overall, you are probably looking at another $100.00 for the pan & $100.00 for 12 quarts of trans fluid (12 qts if you flush the old fluid out of the torque converter via the trans cooler line).
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      07-19-2019, 10:12 AM   #7
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Donít do it man. Never heard of anyone being satisfied with an auto when initially looking for a 6sp. The longer you wait, the more money you can put aside to find your unicorn.

That said, if you are happy with the g37 auto shift, who knows, maybe everything I said above is meaningless.
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      07-19-2019, 11:02 AM   #8
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Quote:
Originally Posted by mweisdorfer View Post
Only ZF trans are found in the 335's. ZF trans are very stout and will last a very long time, if properly maintained.

The age of solenoids in the trans will ultimately determine how fast the trans will shift and the trans' overall health.

Fortunately, the cost of new solenoids has come down a lot, in the last year. I think you can refurbish the solenoids, the various megatronic sleeves and the like for around $275.00 or so. This is of course plus the cost of a new pan filter & trans oil of course.

Overall, you are probably looking at another $100.00 for the pan & $100.00 for 12 quarts of trans fluid (12 qts if you flush the old fluid out of the torque converter via the trans cooler line).
2006 330i and 325i had ZFs. They did make E91 325's in 2006, but they were all XI as far as I know.

Get the 6 speed manual man, if that's what you really want. They are out there. On the 328i there's no possibility to tune the transmission, and the throttle response on the autos are way different (worse) than the manuals. They put down less power too, which an E91 328i needs as much as it can get.
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