S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

light vibration W140 S500

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Old Sep 17, 2021 | 05:58 PM
  #1  
hgroth's Avatar
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W140 S 500
My 1997 S500 has vibration between 50-75 mph

I am experiencing some vibration with my S500 that starts at around 50mph and gets stronger at 60-70 mph and at around 75mph its is hardly noticeable.
I had my tires rebalanced twice and then replaced all 4 tires and nothing has changed, Its not the brake rotors as it does not happen during braking. I also
had the front wheel bearings replaced and installed all ceramic brake pads.The steering wheel does not shake when it vibrates.

Last edited by hgroth; Sep 18, 2021 at 09:25 AM.
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Old Sep 20, 2021 | 07:52 AM
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burgca's Avatar
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From: Pottstown, PA
'97 S500 Coupe, 2016 AMG S63 Coupe, 2007 Audi Q7
What size rims? It’s possible that one of your rims are bent.
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Old Oct 8, 2021 | 12:51 PM
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1995 S500
There is a steering shock on your front suspension/under the car . Replace it ($80 part) buy OEM only and your vibrations will go away.
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Old Oct 11, 2021 | 12:09 AM
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1995 S600 sedan, 2006 E55 AMG wagon
I have nearly identical symptoms in my 95 S600. The only visually failed suspension components I could see where the right UCA ball joint and both sway bar link ball joints, but replacing both sway bar links as well as the whole right UCA didn’t solve the problem.

I understand this is a common problem with the W140 chasis, and have heard equally as many ideas about what the culprit is, including (in my humble opinion) bad ones such as the steering damper suggested in this post.
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Old Nov 10, 2021 | 06:32 PM
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1996 S420, 2001 SLK320
Did you get cheap tires to replace the ones that were on there? Even new cheap tires can be problematic.
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