"knocking" noise from front end when turning wheel (SOLVED)

jonathan13 · 04-28-2015, 10:37 AM

Vehicle: 2011 135i DCT- stock m-sport suspension

I have noticed that when pulling out of my apartment complex at an angle to avoice scraping my front bumper cover, I am hearing a loud "knock" noise from the front end. It is one single noise per accurance, and it feels like something is hitting the underside of the floor board.

Also, the noise presents itself when I am stationary and turn the wheel full lock. Again, when reproducing the noise this way, it feels as though something is hitting the underside of the floor.

The noise is not present at higher speed than what I would get up to in a parking lot (or at least it is undetectable at a higher speed).

I have an appointment with BMW next Wednesday to have them take a look at it. I just wanted to make a quick post here to see if anyone else has ever experienced something like this. If anyone has any information that might be helpful, I would be very grateful. Thanks in advance guys!

jonathan13 · 04-28-2015, 02:42 PM

Had my mechanic at our luxury collision center take a look. Worn lower control arm bushings.

andrey_gta · 04-28-2015, 09:45 PM

Wow. Good to know. Thanks for reporting. I'll be listening closely to mine

jonathan13 · 04-29-2015, 06:24 AM

I ordered new bushings yesterday, which are set to arrive today. Once they have been replaced, I will report back to let everyone know if it takes care of the issue.

jonathan13 · 04-29-2015, 06:32 PM

Bushings installed. No more noise.

Dackelone · 04-29-2015, 06:46 PM

Quote:

Originally Posted by jonathan13

Bushings installed. No more noise.

Cool thanks for the update! Maybe you can post the part number or a pic of said bushing?

jonathan13 · 05-04-2015, 07:28 AM

Quote:

Originally Posted by Dackelone

Cool thanks for the update! Maybe you can post the part number or a pic of said bushing?

Yes sir!

Part number is 31126763719. List price is $79.75 EACH from BMW. In the photo below, it is number 3.

jonathan13 · 05-04-2015, 07:30 AM

I also want to add that most of the time when these bushings go bad, people will upgrade to the m3 component. I did not want to spend the extra money myself, but it is definitely something to look into if these bushings need replacement.

MightyMouseTech · 05-04-2015, 07:40 AM

Quote:

Originally Posted by jonathan13

I also want to add that most of the time when these bushings go bad, people will upgrade to the m3 component. I did not want to spend the extra money myself, but it is definitely something to look into if these bushings need replacement.

That is not actually the lower control arm bushing, it is the torque rod bushing. Believe it or not, if you install the M3 TRW OEM version of that arm, it is about the same price of just the OE bushing.

jonathan13 · 05-04-2015, 08:18 AM

Quote:

Originally Posted by MightyMouseTech

That is not actually the lower control arm bushing, it is the torque rod bushing. Believe it or not, if you install the M3 TRW OEM version of that arm, it is about the same price of just the OE bushing.

Thank you for the correction. I was going off of what my estimating software calls it. It has it labeled as a "front lower control arm & bushing". I checked into the M equivalent, and it was going to be quite a bit more expensive for me.

ShocknAwe · 05-04-2015, 08:26 AM

Yup. Also, Meyle HD makes a great replacement bushing for the tension strut.

TRW M3 parts:
https://www.fcpeuro.com/products/bmw...31102283575-76

MightyMouseTech · 05-04-2015, 11:00 AM

Quote:

Originally Posted by jonathan13

Part number is 31126763719. List price is $79.75 EACH from BMW. In the photo below, it is number 3.

vs

Quote:

Suspension Control Arm and Ball Joint Assembly TRW-JTC1424 $84.99

Exactly.

jonathan13 · 05-04-2015, 11:14 AM

Quote:

Originally Posted by MightyMouseTech

vs

Exactly.

Very nice. And there you have it folks. Worth the upgrade!

jonathan13 · 05-04-2015, 11:16 AM

I work for a group of dealerships, so I was able to get employee pricing on the bushings, AND they messed up and priced them to me as being a pair of two, so when they came in and they realized it should be priced EACH, I ended up getting both bushings for $56.

ShocknAwe · 05-04-2015, 11:18 AM

Quote:

Originally Posted by jonathan13

I work for a group of dealerships, so I was able to get employee pricing on the bushings, AND they messed up and priced them to me as being a pair of two, so when they came in and they realized it should be priced EACH, I ended up getting both bushings for $56.

Can't complain about that I guess.

jonathan13 · 05-04-2015, 12:01 PM

Quote:

Originally Posted by ShocknAwe

Can't complain about that I guess.

Still though, if I had known those components were that cheap, I probably would have went ahead and upgraded. Oh well... good to know for the next person!

Dackelone · 05-04-2015, 05:24 PM

Quote:

Originally Posted by MightyMouseTech

That is not actually the lower control arm bushing, it is the torque rod bushing. Believe it or not, if you install the M3 TRW OEM version of that arm, it is about the same price of just the OE bushing.

I think in the BMW(euro world) it can also be called a "thrust rod".

jonathan13 · 05-05-2015, 04:16 PM

Quote:

Originally Posted by Dackelone

I think in the BMW(euro world) it can also be called a "thrust rod".

I like that terminology.

04-28-2015, 10:37 AM	#1
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	"knocking" noise from front end when turning wheel (SOLVED) Vehicle: 2011 135i DCT- stock m-sport suspension I have noticed that when pulling out of my apartment complex at an angle to avoice scraping my front bumper cover, I am hearing a loud "knock" noise from the front end. It is one single noise per accurance, and it feels like something is hitting the underside of the floor board. Also, the noise presents itself when I am stationary and turn the wheel full lock. Again, when reproducing the noise this way, it feels as though something is hitting the underside of the floor. The noise is not present at higher speed than what I would get up to in a parking lot (or at least it is undetectable at a higher speed). I have an appointment with BMW next Wednesday to have them take a look at it. I just wanted to make a quick post here to see if anyone else has ever experienced something like this. If anyone has any information that might be helpful, I would be very grateful. Thanks in advance guys! Last edited by jonathan13; 04-28-2015 at 02:42 PM..
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04-28-2015, 02:42 PM	#2
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	Had my mechanic at our luxury collision center take a look. Worn lower control arm bushings.
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04-28-2015, 09:45 PM	#3
andrey_gta Brigadier General 298 Rep 4,040 Posts Drives: 130i coupé ;) Join Date: Nov 2011 Location: Bimmerpost iTrader: (1) Garage List 2008 BMW 128i [10.00]	Wow. Good to know. Thanks for reporting. I'll be listening closely to mine __________________ 128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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04-29-2015, 06:24 AM	#4
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	I ordered new bushings yesterday, which are set to arrive today. Once they have been replaced, I will report back to let everyone know if it takes care of the issue.
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04-29-2015, 06:32 PM	#5
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	Bushings installed. No more noise.
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05-04-2015, 07:30 AM	#8
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	I also want to add that most of the time when these bushings go bad, people will upgrade to the m3 component. I did not want to spend the extra money myself, but it is definitely something to look into if these bushings need replacement.
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05-04-2015, 08:26 AM	#11
ShocknAwe 1Addict 3231 Rep 7,890 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	Yup. Also, Meyle HD makes a great replacement bushing for the tension strut. TRW M3 parts: https://www.fcpeuro.com/products/bmw...31102283575-76 __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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05-04-2015, 11:16 AM	#14
jonathan13 Private First Class 18 Rep 138 Posts Drives: Tanzanite Blue ‘16 M3 Join Date: Feb 2015 Location: Tennessee iTrader: (2)	I work for a group of dealerships, so I was able to get employee pricing on the bushings, AND they messed up and priced them to me as being a pair of two, so when they came in and they realized it should be priced EACH, I ended up getting both bushings for $56.
	Appreciate 0 Quote