Grinding noise when going over a speed bump (stock xi car)

Xtype0 · 01-03-2008, 01:30 PM

So I hear a loud grinding noise coming from the frnot axle (stock 330xi) when I'm going over a speed bump at any speed higher than 10km/h. Last time I complained about this to the dealership was about 5000km ago and they found defective bushings and it was replaced and additional padding was installed. So the noise is back and I'm guessing its the bushings again? Anyone had a similar experience?

Also my fuel econ is getting worst as well (15.6L/100km up from 12.5L/100km with 70% city, 30% highway). Any correlation to the bushings?

Arustik1 · 01-03-2008, 03:36 PM

No idea bro, if you don't get answers tho...take it in asap!!

Kiemyster · 01-03-2008, 03:38 PM

wish i could help, but i doubt its the bushings again. how many miles ur car has now?

Explorer3253 · 01-03-2008, 04:58 PM

took mine in today for that..shows up more when its cold out

darkcloud · 01-03-2008, 08:20 PM

I've heard a similar noise a few times on my 325i but can't seem to replicate it. Maybe I'm hearing things, although I'd be interested to what your dealer tells you.

Explorer3253 · 01-03-2008, 08:41 PM

weird..loaner does same thing!

Xtype0 · 01-03-2008, 10:10 PM

My car has 24,000km on it. This car seems to have a lot of cold related problems, lol. Its already going to the dealer next week, so it'll be another thing on the list to fix.

Firefly6 · 01-04-2008, 08:00 AM

Mine does the same. More noticable in cold temp. Probably the unusual way the suspension travels (sharp stright vertical movement) That's the only time I hear it so I don't worry about it.

fizzle · 01-04-2008, 09:34 AM

when it gets cold out this tends to happen to the bushings. its not a big deal but its kinda annoying. just have them lube the bushings.

noro · 01-04-2008, 11:23 AM

Yup same things here. The colder it gets the less suspension travel I have without noise. It could be a combo if things, rubber bushings, shocks etc. I think it's completely benign. I am not even going to bother to bring the car in.

Xtype0 · 01-04-2008, 11:44 AM

Quote:

Originally Posted by Explorer3253

weird..loaner does same thing!

Did they get back to you on what seems to be the problem?

AZ-HiHoAG · 01-04-2008, 12:00 PM

I've experienced this with my previous car (a Lincoln LS). It's probably the bushings on the front sway bar. The guys that regularly encountered speed bumps, and repeatedly hit them too hard (fast) would wear the bushings out at a faster rate. Cold climates don't help much either. The grinding noise isn't pleasant and won't go away until the bushings get replaced. If you only hear the noise when going over really rough roads, or when forcing the suspension to travel a big range, it's probably because your bushings are shot.

E36E46E90 · 01-04-2008, 01:02 PM

Would be very interested in the dealer response

mds82 · 01-04-2008, 03:21 PM

i got the same thing. it always happens when i leave work when the car is still cold. it was 5 degrees the other day when i left and it sounded like crap...

Forceflow · 01-05-2008, 08:15 PM

Mine also is doing the same thing dealer can't find anything wrong with it, I cringe every time I hear it.

Crimson92 · 01-07-2008, 12:39 PM

what the hell it happend to me this weekend...it sounded like i was dragging a soda can....happend twice..

once the car gets going it stops?? wth.? any ideas

undecided · 01-07-2008, 01:18 PM

It's not really a "grinding". Anyway, this happened to my 3-4 yr old Mercedes and a little WD-40 sprayed onto the bushings cured it for a year or so.

Xtype0 · 01-14-2008, 12:31 PM

Well, just heard from the dealership, they ordered new bushings for the suspension along with a new cylinder head for the ticking problem. We'll see what they say in 4-5 days.

thekurgan · 01-14-2008, 12:35 PM

Quote:

Originally Posted by Xtype0

So I hear a loud grinding noise coming from the frnot axle (stock 330xi) when I'm going over a speed bump at any speed higher than 10km/h. Last time I complained about this to the dealership was about 5000km ago and they found defective bushings and it was replaced and additional padding was installed. So the noise is back and I'm guessing its the bushings again? Anyone had a similar experience?

Also my fuel econ is getting worst as well (15.6L/100km up from 12.5L/100km with 70% city, 30% highway). Any correlation to the bushings?

Engine mount issue or transmission mount issue?

Xtype0 · 01-14-2008, 05:43 PM

Quote:

Originally Posted by thekurgan

Engine mount issue or transmission mount issue?

I bushing is a seperate issue from the ticking. I guess the bushing is either worn or defective. The dealer was not very specific but I'm more concerned with them replacing the cylinder head than the bushing.

sieben1973 · 02-09-2009, 09:15 AM

I have the same thing
Its as if bottom of the car was scrapping the pavement
Only happens when it cold like -10 to -30 degrees C
i went to the dealer
they seemed to know exactly what i was talking about
they lubricated the sway bar bushings, and told me i can come back any time to have it lubricated again. (2008-328i, no mods)
I also called Customer Service BMW NA (Canada) and told them about this issue
they said if they come up with a solution they will call the Dealer to contact me.
I would hate to go through this every winter

sieben1973 · 02-09-2009, 09:15 AM

I have the same thing
Its as if bottom of the car was scrapping the pavement
Only happens when it cold like -10 to -30 degrees C
i went to the dealer
they seemed to know exactly what i was talking about
they lubricated the sway bar bushings, and told me i can come back any time to have it lubricated again. (2008-328i, no mods)
I also called Customer Service BMW NA (Canada) and told them about this issue
they said if they come up with a solution they will call the Dealer to contact me.
I would hate to go through this every winter

01-03-2008, 01:30 PM	#1
Xtype0 Second Lieutenant 15 Rep 298 Posts Drives: E90 335xi Special Edition Join Date: Mar 2006 Location: Toronto, Canada iTrader: (0) Garage List 2011 E90 335xi [0.00]	Grinding noise when going over a speed bump (stock xi car) So I hear a loud grinding noise coming from the frnot axle (stock 330xi) when I'm going over a speed bump at any speed higher than 10km/h. Last time I complained about this to the dealership was about 5000km ago and they found defective bushings and it was replaced and additional padding was installed. So the noise is back and I'm guessing its the bushings again? Anyone had a similar experience? Also my fuel econ is getting worst as well (15.6L/100km up from 12.5L/100km with 70% city, 30% highway). Any correlation to the bushings?
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01-03-2008, 03:36 PM	#2
Arustik1 HYEPWR 100 Rep 2,868 Posts Drives: E46 M3 Join Date: Oct 2007 Location: Mesa, AZ iTrader: (3) Garage List 2007 E92 335i [0.00]	No idea bro, if you don't get answers tho...take it in asap!! __________________ 2002 330ci Titanium Silver / Gray 2005 X5 3.0i Black Sapphire Metallic / Black 2002 M3 Laguna Seca Blue / Black 2001 M5 Jet Black / Black
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01-03-2008, 03:38 PM	#3
Kiemyster Bimmerpost Resident Marijuana Consultant 455 Rep 3,197 Posts Drives: 320i, 325xi, 335Xi, 335i, M3 Join Date: Nov 2006 Location: Queens/NYC iTrader: (4) Garage List 2010 BMW 335i [0.00] 2011 BMW X335i [0.00] 2006 BMW E90 325xi [0.00] 2011 BMW E90 335xi [4.00] 2011 BMW M3 E90 [7.00] 2006 E90 320i [0.00]	wish i could help, but i doubt its the bushings again. how many miles ur car has now? __________________ "AMG What! S-Line Who? If you ain't got that M I got no respect for you!" '06 Alpine Weiss E90 320i \| '06 The Green Machine E90 325xi \| '11 Alpine Weiss E90 M3 ZCP \| '10 Silverstone X5M \| '11 Alpine Weiss E90 335xi
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01-03-2008, 04:58 PM	#4
Explorer3253 Lieutenant 61 Rep 557 Posts Drives: 2014 f32 Join Date: Nov 2005 Location: Westchester County, NY iTrader: (4)	took mine in today for that..shows up more when its cold out __________________ '06 325Xi - Jet Black - SOLD, '08 328Xi - Jet Black, Coral, 6spd - SOLD, '07 328Xi - Jet Black, SOLD, '11 328Xi, Deep Sea Blue, Oyster/Black - SOLD '14 428XI, Alpine White, Coral, MSport, Auto, Premium, Tech, Heated Seats/Steering, Drivers Ass, Drivers+ - On Order for ED
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01-03-2008, 08:20 PM	#5
darkcloud Colonel 335 Rep 2,385 Posts Drives: 09 VW JSW Join Date: Aug 2006 Location: cleveland, oh iTrader: (2) Garage List 2006 325i [0.00]	I've heard a similar noise a few times on my 325i but can't seem to replicate it. Maybe I'm hearing things, although I'd be interested to what your dealer tells you. __________________ retired 06 E90 325i New: 09 VW Platinum Grey Jetta Sportwagen 2.0T SEL w/DSG, panoramic sunroof and Ipod adapter
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01-03-2008, 08:41 PM	#6
Explorer3253 Lieutenant 61 Rep 557 Posts Drives: 2014 f32 Join Date: Nov 2005 Location: Westchester County, NY iTrader: (4)	weird..loaner does same thing! __________________ '06 325Xi - Jet Black - SOLD, '08 328Xi - Jet Black, Coral, 6spd - SOLD, '07 328Xi - Jet Black, SOLD, '11 328Xi, Deep Sea Blue, Oyster/Black - SOLD '14 428XI, Alpine White, Coral, MSport, Auto, Premium, Tech, Heated Seats/Steering, Drivers Ass, Drivers+ - On Order for ED
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01-03-2008, 10:10 PM	#7
Xtype0 Second Lieutenant 15 Rep 298 Posts Drives: E90 335xi Special Edition Join Date: Mar 2006 Location: Toronto, Canada iTrader: (0) Garage List 2011 E90 335xi [0.00]	My car has 24,000km on it. This car seems to have a lot of cold related problems, lol. Its already going to the dealer next week, so it'll be another thing on the list to fix.
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01-04-2008, 08:00 AM	#8
Firefly6 Lieutenant 12 Rep 412 Posts Drives: 2018 330i Xdrive Join Date: Aug 2007 Location: New Jersey iTrader: (2)	Mine does the same. More noticable in cold temp. Probably the unusual way the suspension travels (sharp stright vertical movement) That's the only time I hear it so I don't worry about it.
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01-04-2008, 09:34 AM	#9
fizzle is it the 5oclock free crack giveaway? 234 Rep 17,453 Posts Drives: a motorized vee-hickle Join Date: May 2007 Location: North Jersey iTrader: (14)	when it gets cold out this tends to happen to the bushings. its not a big deal but its kinda annoying. just have them lube the bushings.
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01-04-2008, 11:23 AM	#10
noro Colonel 90 Rep 2,707 Posts Drives: '91 M3, '04 E46 ZHP, '72 2002 Join Date: Aug 2006 Location: Boston iTrader: (0)	Yup same things here. The colder it gets the less suspension travel I have without noise. It could be a combo if things, rubber bushings, shocks etc. I think it's completely benign. I am not even going to bother to bring the car in. __________________ zhpregistry.net - ZHP stats and free classifieds.
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01-04-2008, 12:00 PM	#12
AZ-HiHoAG New Member 0 Rep 17 Posts Drives: 2007 BMW 335i Join Date: Nov 2007 Location: Arizona iTrader: (0) Garage List 2007 335i [0.00]	I've experienced this with my previous car (a Lincoln LS). It's probably the bushings on the front sway bar. The guys that regularly encountered speed bumps, and repeatedly hit them too hard (fast) would wear the bushings out at a faster rate. Cold climates don't help much either. The grinding noise isn't pleasant and won't go away until the bushings get replaced. If you only hear the noise when going over really rough roads, or when forcing the suspension to travel a big range, it's probably because your bushings are shot.
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01-04-2008, 01:02 PM	#13
E36E46E90 Vice Admiral 14 Rep 57 Posts Drives: 2006 325i 6MT Join Date: Nov 2006 Location: Chicago, IL iTrader: (0)	Would be very interested in the dealer response
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01-04-2008, 03:21 PM	#14
mds82 Major General 364 Rep 5,842 Posts Drives: 2006 325xi Join Date: Aug 2005 Location: South Central Connecticut iTrader: (40) Garage List 2006 325xi Snow Pics [0.00] 2006 BMW 325xi [0.00]	i got the same thing. it always happens when i leave work when the car is still cold. it was 5 degrees the other day when i left and it sounded like crap...
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01-05-2008, 08:15 PM	#15
Forceflow Enlisted Member 2 Rep 41 Posts Drives: 2006 325xi Join Date: Nov 2007 Location: Torrington CT iTrader: (0)	Mine also is doing the same thing dealer can't find anything wrong with it, I cringe every time I hear it.
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01-07-2008, 01:18 PM	#17
undecided Captain 83 Rep 985 Posts Drives: 08 M5 Sapphire Black Join Date: Oct 2005 Location: CT iTrader: (0) Garage List 2008 335xi SOLD!!!! ... [0.00] 2008 M5 [0.00]	Mine is practically brand new and does it It's not really a "grinding". Anyway, this happened to my 3-4 yr old Mercedes and a little WD-40 sprayed onto the bushings cured it for a year or so.
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01-14-2008, 12:31 PM	#18
Xtype0 Second Lieutenant 15 Rep 298 Posts Drives: E90 335xi Special Edition Join Date: Mar 2006 Location: Toronto, Canada iTrader: (0) Garage List 2011 E90 335xi [0.00]	Well, just heard from the dealership, they ordered new bushings for the suspension along with a new cylinder head for the ticking problem. We'll see what they say in 4-5 days. __________________ '11 E90 335xi, ZRS, ZRW, ZKK '13 Kawasaki ZX-6R ABS
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02-09-2009, 09:15 AM	#21
sieben1973 Private First Class 7 Rep 130 Posts Drives: 2011 "dark grey" 528i Join Date: Aug 2008 Location: QC iTrader: (0)	I have the same thing Its as if bottom of the car was scrapping the pavement Only happens when it cold like -10 to -30 degrees C i went to the dealer they seemed to know exactly what i was talking about they lubricated the sway bar bushings, and told me i can come back any time to have it lubricated again. (2008-328i, no mods) I also called Customer Service BMW NA (Canada) and told them about this issue they said if they come up with a solution they will call the Dealer to contact me. I would hate to go through this every winter
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