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      08-02-2019, 06:51 AM   #110
kingmonkey8
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Drives: BMW 428i
Join Date: Jan 2007
Location: UK

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Quote:
Originally Posted by alecalecu View Post
Dear colleagues,

the strangest thing happened today: did a drivetest with a good friend to show him the problem and we went on the newest highway around. All vibration gone!! I was speechless. Went up to 170kmh, nothing. The hum between 100 and 125 kmh still there but no vibration whatsoever. Nothing!
Yesterday I went on an old highway, the car was shaking like jelly at 170kmh. Very constant shake like a bent rim.

Only one conclusion comes out: the m sport suspension is so sensible that if the road is not perfect, the car vibrates a lot!

Any thoughts on this?

320i 2018
b48m
8at
m sport

cheers!
If the car is smooth on a smooth highway, then I don't think you have a vibration issue. The M sport suspension is not that sensitive it will shake the car like you say. If the road is rough then you may feel the bumps in the road and get a lot of tyre roar. Maybe you have something loose or there is some play in your suspension?
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