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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 08-07-2012, 04:43 AM
bimmerman2 bimmerman2 is offline
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Unhappy Highway vibration.. Not tires... Help please:)

Greetings, I have been having on ongoing issue with highway shimmy from 55-80mph. Had tires replaced (245/45/19 conti pro contact) twice, and road forced, shimmy still present. I am very frustrated because I had a BMW dealership look at it and they said visually everything was okay, must replace the tires, which I did and still no luck. Could this be the ongoing issue I have read about on the lower control arms that go bad? I have an 2004 745li with 87k miles. Any suggestions is much appreciated. Thanks. -Andrew
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  #2  
Old 08-07-2012, 05:13 AM
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GeorgeT GeorgeT is offline
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Bent rim, drive shaft out of balance, u-joint going bad etc.
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  #3  
Old 08-07-2012, 05:18 AM
bimmerman2 bimmerman2 is offline
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Rims are actually fine, not bent at all. And it is more of a front end vibration, coasting and accelerating.
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  #4  
Old 08-07-2012, 06:16 AM
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ndabunka ndabunka is offline
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Quote:
Originally Posted by bimmerman2 View Post
Rims are actually fine, not bent at all. And it is more of a front end vibration, coasting and accelerating.
What makes you think the rims aren't bent. Hard to tell sometimes. However, if the vibration ONLY occurs at certain speeds, it is probably the tension struts. That speed is USUALLY starts around 50MPH and (mostly) goes away once speed increases (e.g. my vibration goes away @ 60MPH). I am getting mine replaced this week
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  #5  
Old 08-07-2012, 06:23 AM
bimmerman2 bimmerman2 is offline
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As fate would have it, I am a service advisor at an audi dealership. And my experienced team of Audi technicians, couldn't diag a 7 Series if their life depended on it. But every other week I have my techs road force the front tires in hope to get the vibration solved. Should I start with replacing my tension arms, and hold of on the wishbone arms? Or replace them both? Could the wishbone arm be the culprit as well?
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  #6  
Old 08-07-2012, 12:08 PM
DLF750 DLF750 is offline
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I had a vibration issue on my 06 7 before i sold it recently and turned out my calipers were seizing up. Had to replace them all.
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  #7  
Old 08-21-2012, 12:48 AM
AliKhan299 AliKhan299 is offline
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its probably the cv joints in the front have them both replaced and it will be good
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  #8  
Old 08-21-2012, 04:07 AM
bimmerman2 bimmerman2 is offline
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Actually, just brought it in to the BMW dealership again, 3 technicians including the shop foreman were on it, and they thought it was most likely the guibo (flex disc) behind the trans. Had it replaced, vibration still present. Had all four tires roadforced under 18lbs, no rims bent evident, all four front lower control arms replaced, strut mounts and strut bearings replaced. Vibration still present. Most heavily noticeable at 60mph with my foot barely on the pedal. Ugh. I am at a complete loss for words. And find this very frustrating to say the least because it is still not resolved. Any previous experiences and suggestions??
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  #9  
Old 08-21-2012, 05:56 AM
Boosejaw Boosejaw is offline
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Have you thought about wheel bearings?
Have you tried a different set of rims ? Id look into your brakes to see if a caliper is stuck. Check for uneven wear on rotors.
Have your Audi guys look at the car backwards so they can pretend its FWD.
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  #10  
Old 08-21-2012, 07:05 AM
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Quote:
Originally Posted by Boosejaw View Post
Have you thought about wheel bearings?
Have you tried a different set of rims ? Id look into your brakes to see if a caliper is stuck. Check for uneven wear on rotors.
Have your Audi guys look at the car backwards so they can pretend its FWD.
Have your Audi guys look at the car backwards so they can pretend its FWD.
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  #11  
Old 08-21-2012, 09:53 AM
AliKhan299 AliKhan299 is offline
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Quote:
Originally Posted by bimmerman2 View Post
Actually, just brought it in to the BMW dealership again, 3 technicians including the shop foreman were on it, and they thought it was most likely the guibo (flex disc) behind the trans. Had it replaced, vibration still present. Had all four tires roadforced under 18lbs, no rims bent evident, all four front lower control arms replaced, strut mounts and strut bearings replaced. Vibration still present. Most heavily noticeable at 60mph with my foot barely on the pedal. Ugh. I am at a complete loss for words. And find this very frustrating to say the least because it is still not resolved. Any previous experiences and suggestions??
Dude I had exactly similar problem at the same speed in my Audi cabriolet ....I replaced tires . good them aligned balanced nothing worked ...it turned out to be the cv joints in front

ask them about it
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  #12  
Old 08-21-2012, 10:16 AM
flylomo69 flylomo69 is offline
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Your problem is the Thrust Arm Bushings. Need to replace either the bushings or the whole arm assembly. Average coat at Dealer 1200.00us... Or DIY...

This for the E65 and E66 models w/rear wheel drive....

Last edited by flylomo69; 08-21-2012 at 10:17 AM.
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  #13  
Old 08-21-2012, 12:54 PM
bimmerman2 bimmerman2 is offline
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I just had the thrust arms replaced (lower control arms) including the bushings. The thrust arms and wishbones arms were just done. Vibration still present. You would think the BMW technicians would tell me if the CV joint is bad or not when they replaced the guibo flex disc.
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  #14  
Old 08-21-2012, 03:26 PM
Busarider Busarider is offline
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How is the alignment? is it pulling to any side at slow speeds?
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  #15  
Old 08-21-2012, 04:50 PM
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First_745Li First_745Li is offline
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Quote:
Originally Posted by Boosejaw View Post
Have your Audi guys look at the car backwards so they can pretend its FWD.
what does that mean??
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  #16  
Old 08-21-2012, 06:10 PM
AliKhan299 AliKhan299 is offline
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Im sure its the cv joint.

I was told by 2 audi technicians that the car is in in limp mode and i needed to replace some switch on the transmission and perhaps even the whole transmission ...I went for a 3rd opinion to an asian guy who wasn't an official audi technician ...He replaced the cv joints and the car became perfect.


It used to start vibrating as soon as I hit 80-90 km/hr
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  #17  
Old 08-22-2012, 04:08 AM
bimmerman2 bimmerman2 is offline
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The alignment is actually dead on. Had my audi guys align it to perfect specification. Alignment was done after the thrust arms and wishbone arms were replaced. It feels exactly like a the wheels are wobbling, at highway speeds. Ugh...
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  #18  
Old 08-22-2012, 07:14 AM
Boosejaw Boosejaw is offline
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Switch rims with someone and see its the same.
Im currently selling a set of BMW rims in the classifieds.
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  #19  
Old 08-23-2012, 08:48 AM
bimmerman2 bimmerman2 is offline
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Get this, the BMW dealership told me it is most likely coming from the torque converter or internal damage in the transmission that is causing the vibration. They also founf leak valve seals, that will get alot worse in the next year and cause alot of smoke and other issues. UGHHHH!!!
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  #20  
Old 08-23-2012, 10:13 AM
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alpinaman24 alpinaman24 is offline
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i was told its a common torque converter operation

"its studdering because it wants to go into the next gear but it doesnt " was what the SA at bob smith told me
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  #21  
Old 08-24-2012, 02:00 AM
AliKhan299 AliKhan299 is offline
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If its in limp mode it will limit itself to certain gears so check ....If it goes from 1 to the last gear then its not in limp mode and not a transmission problem
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  #22  
Old 08-24-2012, 12:00 PM
jenkx jenkx is offline
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Somebody had this same problem last year some time. He tried EVERYTHING. Then he changed his wheel bearings and it solved the problem.
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  #23  
Old 08-31-2012, 12:35 PM
baloo588 baloo588 is offline
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DId you say under 18 lbs of road force??? My BMW 5 will vibrate with any tire/wheel assembly over 12 lbs. The fronts should be below 10 and the rears below 12 for glass smooth ride. Same thing holds for my 3 series coupe.
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  #24  
Old 09-06-2012, 05:13 AM
bimmerman2 bimmerman2 is offline
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Finally figured it ou!!!! A former BMW tech on another SA's team looked at my car yesterday. He felt the vibration without even driving it. Step on the brakes, hit the gas a little bit, front end vibration felt. Put it on the lift, lots of play in my left front motor mount. Also, the hitting the gas at a stop, the whole motor shifts about 6 inches to the right. I guess it is safe to say we finally found the culprit of this annoying vibration. From what he told me, motor mount replacement on this car is a frickin nightmare...
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  #25  
Old 09-06-2012, 03:27 PM
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csmeance csmeance is offline
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Quote:
Originally Posted by bimmerman2 View Post
Greetings, I have been having on ongoing issue with highway shimmy from 55-80mph. Had tires replaced (245/45/19 conti pro contact) twice, and road forced, shimmy still present. I am very frustrated because I had a BMW dealership look at it and they said visually everything was okay, must replace the tires, which I did and still no luck. Could this be the ongoing issue I have read about on the lower control arms that go bad? I have an 2004 745li with 87k miles. Any suggestions is much appreciated. Thanks. -Andrew
I had the same issue with my continental DW but on the rear tires. The issue is that the tires have a soft sidewall and need to be HIGH PRESSURE MOUNTED! My tire shop inflated them to about 60PSI or something stupid high like that and make sure that the bead sealed properly. After this they brought the pressure down, balanced it and mounted and it was gone.

Quote:
Originally Posted by bimmerman2 View Post
Finally figured it ou!!!! A former BMW tech on another SA's team looked at my car yesterday. He felt the vibration without even driving it. Step on the brakes, hit the gas a little bit, front end vibration felt. Put it on the lift, lots of play in my left front motor mount. Also, the hitting the gas at a stop, the whole motor shifts about 6 inches to the right. I guess it is safe to say we finally found the culprit of this annoying vibration. From what he told me, motor mount replacement on this car is a frickin nightmare...
The motor mount would cause vibration throughout the whole car, and as well the motor moving 6 inches is a BIG amount of movement. I'm not saying that it's not possible, but if it is you have more issues than a broken motor mount now.
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