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Vibration at 80mph

Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=4795
Printed Date: 07-May-2024 at 16:31


Topic: Vibration at 80mph
Posted By: sharpk
Subject: Vibration at 80mph
Date Posted: 31-December-2003 at 09:58

Can anyone help !

I recently bought an X reg 520i and get vibration through the drivers seat between 75 and 85 mph. I've had the wheels balanced but made no difference and dealer says there isn't a problem. Trying to ignore it but very difficult !!!

 




Replies:
Posted By: STEVE328
Date Posted: 31-December-2003 at 10:55
Don't you know, the speed limit in the U.K is 70 MPH!!

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1996 N Montreal blue 328i saloon 45k / 01 Y Yamaha YZF600R Thundercat.


Posted By: ardasaliah
Date Posted: 31-December-2003 at 12:03
It might be a very small lump in the tyre?

Did you get the back tyres balanced. Get the tracking done too


Posted By: ddccaa
Date Posted: 31-December-2003 at 12:45

there can be a problem with one or more tires. some of them can "jump" because of the erronous production. I faced this situation two times. one was related to pirelli. and other one was maxxis. when maxxis were new they changed one of the tires that was jumping. dont let them ignore your problem.they should solve it.

 

if problem is not tire related you should check upper on lower control arms plus rotors and wheel themselves.



Posted By: Ian :0
Date Posted: 31-December-2003 at 13:32

I had the same problem on my T reg 520 with newly fitted Michelins from a well known national fitter. Went to a different fitter and had them re-balanced. They were not only way-out, but one tyre hadn't been seated correctly and as a consequence had far too much lead on it to counteract this. The first fitter hadn't balanced the inner rims either. Now all ok.

Try different roads ! My route into work (the only 70mph road I regularly travel on) has a series of anomolies along it's full length. These get in sync with the car and show as a 65 - 80mph vibration. Other fast roads are ok.

Hope this helps !



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Ian


Posted By: daddy cool
Date Posted: 01-January-2004 at 12:53
could be an off centre tread , or it could be the prop out of balance ! its rare but it can happen

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e30 2.7 cab
e30 325i
e30 325 sport
e30 318 touring
e28 m5
e28 m535
e34 m5
e39 540
e36 318ti (green)
e36 318ti (mauve)



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