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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions ZF8 transmission in 330i -- Does yours “thump” after each shift?

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      07-09-2019, 12:00 AM   #1
mzdial
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ZF8 transmission in 330i -- Does yours “thump” after each shift?

I've only had my 330i for about 1500 miles/a little over a month, and was wondering if anyone else has noticed after every gear shifted, it will feel like a thump? (For lack of a better way to describe it.)

It is more pronounced in Sport mode as well. I was testing it this evening with one half and 3/4th throttle. Each shift of the gear will bring on another small thump right after the gear switch.

I had a F30 335 back in the day, which also had a ZF8 -- and it didn't behave like this.

I've not seen anyone post about this, and I was curious if this was just me. I'm half tempted to go test drive another 3 this weekend and see if it behaves similarly.

Thanks!
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      07-09-2019, 04:20 AM   #2
3ismagic#
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Just curious do you feel it under the driver's set?

I can't speak to the g20 because i haven't picked mine up yet. But occasionally in dynamic mode I get a weird thud under my seat with a gear shit in my Alfa Romeo Giulia which has the same 8 ZF tranny that BMW (and most everyone else) uses. It only ever happens from 1st-2nd though.
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      07-09-2019, 05:06 PM   #3
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In sport mode you should hear and feel a pretty hard shift. In comfort mode in normal transmission mode, you shouldn't.
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      07-11-2019, 01:06 AM   #4
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I'm feeling it actually after a gear shift.. It will shift and then will thump after it (not like a hard shift.) It just doesn't feel normal. I think I'm going to make a service appointment and see if it is abnormal.
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