SMG gears grinding from 1st to 2nd

Graham M · 04-13-2008, 09:56 PM

Hey guys, I just bought my '04 3.0I w/SMG a week ago. I have a third party company offering a comprehensive warrenty, thankfully as I think I'll be needing their services quite soon.

Twice the gears grinded from manually shifting from 1st to 2nd today. First time it did this since I bought the car. Both times were half an hour apart from each other today.

Is this a known problem? what do I do know?

Any help would be much appreciated.

ianbiz · 04-13-2008, 10:01 PM

when you shift, do you let off the throttle?

OH FO SHO · 04-13-2008, 10:34 PM

how many miles on the car? i havent had a problem with smg

Graham M · 04-13-2008, 10:36 PM

Quote:

Originally Posted by ianbiz

when you shift, do you let off the throttle?

I do just out of habit from shifting with a manual. Perhaps I slipped up and kept the gas when it was shifting? is that what causes this?

It has 80,700 km's on it as of today.

Brucewonder · 04-13-2008, 11:33 PM

Sorry to hear. I hope it doesnt cost an arm and a leg to fix. I have an 03 SMG w almost 55k miles n so far so good.

OH FO SHO · 04-14-2008, 12:08 AM

maybe your shifting at a low rpm?

Reach · 04-14-2008, 09:02 AM

I've never had anything I could call "grinding" of gears. At low RPMs it might be slow, and at high RPMs I could call the change "hard" but not grinding.

Come to think of it, has there ever yet been a post of a Z4 SMG getting any clutch / gear replacement?

Graham M · 04-14-2008, 06:53 PM

^ Yeah I was really wondering how that would work with the SMG.

Just a quick question. The dealership I got this car from, said that the people that dont drive these cars hard: are hit with the problems typically.

I have a REALLY hard time justifying bagging the snot out of this car to myself, but is that the answer?

I dont push it on rough cloverleafs, but is it a good idea to push it too 4k and over to shift etc. ? Judging by the posts, and what I've read: the more I rag on the engine the better.
Both of these grinding incidents were when the revs were below 3500 while shifting in slow traffic.

OH FO SHO · 04-17-2008, 02:46 AM

Quote:

Originally Posted by Reach

I've never had anything I could call "grinding" of gears. At low RPMs it might be slow, and at high RPMs I could call the change "hard" but not grinding.

Come to think of it, has there ever yet been a post of a Z4 SMG getting any clutch / gear replacement?

yeah i heard someone getting the clutch replaced under 20k miles, i think it was covered under warrenty too... i think it was gp20 can't remember

Reach · 04-17-2008, 06:40 AM

Didn't GP20 have the lemon tho?

Graham, I'd go ahead and let the revs fly a little more. Seeing as my last car was an autotragic, I had to remind myself that revving it over 3k was "ok" too, but now I have no problems letting it get up to 4/5/6k before a shift. Even to redline on the rare occasion. I'm not talking about racing stoplight to stoplight here, but if you want to let it loose for the on-ramp 1/4 mile theres no reason not to. All this and I've manage to get an unreal 29 MPG on my MID for the last few tanks thanks to a fair mix of highway driving. (Actual MPG calculated closer to 27 MPG, but still dang good!)

But back to the original topic... I've grinded a gear or three in my life, but never felt that sensation in this car. (or any of the several SMGs I test drove)

04-13-2008, 09:56 PM	#1
Graham M I love my Z. Pure sex on wheels. 49 Rep 397 Posts Drives: Is sold, goodbye everyone! Join Date: Apr 2008 Location: Calgary iTrader: (0)	SMG gears grinding from 1st to 2nd Hey guys, I just bought my '04 3.0I w/SMG a week ago. I have a third party company offering a comprehensive warrenty, thankfully as I think I'll be needing their services quite soon. Twice the gears grinded from manually shifting from 1st to 2nd today. First time it did this since I bought the car. Both times were half an hour apart from each other today. Is this a known problem? what do I do know? Any help would be much appreciated.
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04-13-2008, 10:01 PM	#2
ianbiz Back in a BMW 205 Rep 5,208 Posts Drives: 2015 335i Msport Join Date: Jul 2007 Location: Dallas, TX iTrader: (8)	when you shift, do you let off the throttle? __________________ Ian
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04-13-2008, 10:34 PM	#3
OH FO SHO Captain 15 Rep 615 Posts Drives: z4 Join Date: Jun 2007 Location: california iTrader: (0)	how many miles on the car? i havent had a problem with smg __________________ '03 3.0i z4: tiag ext., red int., SMG, sport, premium HAMANN exhaust l HAMANN front lip l 19" Miro type 366 (HAMANN edition race replicas) l RPI air scoop l KW v2 coilovers *-MY PICTURE THREAD-*
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04-13-2008, 11:33 PM	#5
Brucewonder Lieutenant Colonel 33 Rep 1,541 Posts Drives: 2011 E92 M3 yea boi Join Date: Nov 2007 Location: Socal iTrader: (4)	Sorry to hear. I hope it doesnt cost an arm and a leg to fix. I have an 03 SMG w almost 55k miles n so far so good. __________________ 2011.5 E92 ///M3 SSII/FR
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04-14-2008, 12:08 AM	#6
OH FO SHO Captain 15 Rep 615 Posts Drives: z4 Join Date: Jun 2007 Location: california iTrader: (0)	maybe your shifting at a low rpm? __________________ '03 3.0i z4: tiag ext., red int., SMG, sport, premium HAMANN exhaust l HAMANN front lip l 19" Miro type 366 (HAMANN edition race replicas) l RPI air scoop l KW v2 coilovers *-MY PICTURE THREAD-*
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04-14-2008, 09:02 AM	#7
Reach gone baby gone 382 Rep 1,052 Posts Drives: 2016 F80 Join Date: Nov 2007 Location: Location, Location. iTrader: (0)	I've never had anything I could call "grinding" of gears. At low RPMs it might be slow, and at high RPMs I could call the change "hard" but not grinding. Come to think of it, has there ever yet been a post of a Z4 SMG getting any clutch / gear replacement?
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04-14-2008, 06:53 PM	#8
Graham M I love my Z. Pure sex on wheels. 49 Rep 397 Posts Drives: Is sold, goodbye everyone! Join Date: Apr 2008 Location: Calgary iTrader: (0)	^ Yeah I was really wondering how that would work with the SMG. Just a quick question. The dealership I got this car from, said that the people that dont drive these cars hard: are hit with the problems typically. I have a REALLY hard time justifying bagging the snot out of this car to myself, but is that the answer? I dont push it on rough cloverleafs, but is it a good idea to push it too 4k and over to shift etc. ? Judging by the posts, and what I've read: the more I rag on the engine the better. Both of these grinding incidents were when the revs were below 3500 while shifting in slow traffic.
	Appreciate 0 Quote

04-17-2008, 06:40 AM	#10
Reach gone baby gone 382 Rep 1,052 Posts Drives: 2016 F80 Join Date: Nov 2007 Location: Location, Location. iTrader: (0)	Didn't GP20 have the lemon tho? Graham, I'd go ahead and let the revs fly a little more. Seeing as my last car was an autotragic, I had to remind myself that revving it over 3k was "ok" too, but now I have no problems letting it get up to 4/5/6k before a shift. Even to redline on the rare occasion. I'm not talking about racing stoplight to stoplight here, but if you want to let it loose for the on-ramp 1/4 mile theres no reason not to. All this and I've manage to get an unreal 29 MPG on my MID for the last few tanks thanks to a fair mix of highway driving. (Actual MPG calculated closer to 27 MPG, but still dang good!) But back to the original topic... I've grinded a gear or three in my life, but never felt that sensation in this car. (or any of the several SMGs I test drove)
	Appreciate 0 Quote