E91 vibration

Flapdog · 07-06-2009, 07:57 AM

Hi

First post on this excellent forum.

I have a vibration coming from the back of my 06 E91 that occurs around 80mph, in 5th/6th gear and when on or off the throttle. It is not a massive problem, the wheels have been balanced (twice). It has been suggested that it could be the prop donut, but when I looked at it yesterday, it appeared to be in good condition. Any other ideas? Car has done almost 90k

Thanks.

M3-FAST · 07-06-2009, 01:30 PM

I had the same on an A4, and even after balancing the wheels, it was still there.

It only disappeared when I needed some new tyres and chucked the rears on the front and then fitted a set of part worns (the car was being sold a week later) to the rear.

Problem solved! Was never sure if it was a dodgy tyre or unbalanced wheel that caused it (even though they had been re-balanced!) but having two different tyres on the rear sorted it.

Does your car have the staggered setup (ie: rear wheels larger than front?) - if not might be worth swapping the front and rears over and see if that cures it. At least you will know it is defo a wheel/tyre issue then or something mechanical and more serious (read more expensive

)

Dr Dave · 07-06-2009, 02:57 PM

Suggest have the wheels balanced on the car.

Flapdog · 07-06-2009, 03:08 PM

Swapped the front and back tyres and problem still there...

How do I get the wheels balanced on the car?

Dr Dave · 07-06-2009, 03:12 PM

Not many places will have the kit, but it is a transponder pickup and a machine that spins the wheel.

Balances the hub/driveshaft/wheel and brake assembly too.

Used to have one at the garage I used to work in years ago, was a super bit of kit. Not cheap.

Dr Dave · 07-06-2009, 03:15 PM

This is an on-car wheel balancer machine.

Flapdog · 07-06-2009, 03:18 PM

Just need to find somewhere local that does this....

07-06-2009, 07:57 AM	#1
Flapdog New Member 0 Rep 6 Posts Drives: BMW E91 330d Join Date: Jul 2009 Location: Kent UK iTrader: (0)	E91 vibration Hi First post on this excellent forum. I have a vibration coming from the back of my 06 E91 that occurs around 80mph, in 5th/6th gear and when on or off the throttle. It is not a massive problem, the wheels have been balanced (twice). It has been suggested that it could be the prop donut, but when I looked at it yesterday, it appeared to be in good condition. Any other ideas? Car has done almost 90k Thanks.
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07-06-2009, 01:30 PM	#2
M3-FAST Defected to the dark side..... 210 Rep 5,795 Posts Drives: BMW M5 LCi Join Date: May 2007 Location: Stafford, UK iTrader: (11) Garage List 2009 E90 M3 [10.00] 2007 325i M-sport C ... [9.00]	I had the same on an A4, and even after balancing the wheels, it was still there. It only disappeared when I needed some new tyres and chucked the rears on the front and then fitted a set of part worns (the car was being sold a week later) to the rear. Problem solved! Was never sure if it was a dodgy tyre or unbalanced wheel that caused it (even though they had been re-balanced!) but having two different tyres on the rear sorted it. Does your car have the staggered setup (ie: rear wheels larger than front?) - if not might be worth swapping the front and rears over and see if that cures it. At least you will know it is defo a wheel/tyre issue then or something mechanical and more serious (read more expensive )
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07-06-2009, 02:57 PM	#3
Dr Dave Zummerzet Zyder Drinker! 112 Rep 5,541 Posts Drives: '06 330D Le Mans Blue Join Date: May 2009 Location: Somerset iTrader: (3) Garage List 2006 330d M Sport [0.00]	Suggest have the wheels balanced on the car. __________________
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07-06-2009, 03:08 PM	#4
Flapdog New Member 0 Rep 6 Posts Drives: BMW E91 330d Join Date: Jul 2009 Location: Kent UK iTrader: (0)	Swapped the front and back tyres and problem still there... How do I get the wheels balanced on the car?
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07-06-2009, 03:12 PM	#5
Dr Dave Zummerzet Zyder Drinker! 112 Rep 5,541 Posts Drives: '06 330D Le Mans Blue Join Date: May 2009 Location: Somerset iTrader: (3) Garage List 2006 330d M Sport [0.00]	Not many places will have the kit, but it is a transponder pickup and a machine that spins the wheel. Balances the hub/driveshaft/wheel and brake assembly too. Used to have one at the garage I used to work in years ago, was a super bit of kit. Not cheap. __________________
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07-06-2009, 03:15 PM	#6
Dr Dave Zummerzet Zyder Drinker! 112 Rep 5,541 Posts Drives: '06 330D Le Mans Blue Join Date: May 2009 Location: Somerset iTrader: (3) Garage List 2006 330d M Sport [0.00]	This is an on-car wheel balancer machine. __________________
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07-06-2009, 03:18 PM	#7
Flapdog New Member 0 Rep 6 Posts Drives: BMW E91 330d Join Date: Jul 2009 Location: Kent UK iTrader: (0)	Just need to find somewhere local that does this....
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