Rear End Vibration - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 09-05-2013
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Rear End Vibration

My 230K has a vibration which seems to be coming from the rear of the car at almost exactly 40mph (60kph)

It doesn't matter which gear I'm in, & it's worse when the car is cold.

I thought it might be the rubber doughnut in the propshaft, & the vibration reduced as it warmed up, but it looks pristine & there is no play in the prop or the driveshafts.

Has anybody got any suggestions as to where I should be looking please?
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#2 Old 09-05-2013
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Could be a tire or wheel.
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#3 Old 09-05-2013
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Sorry - forgot to say, new tyres & bananced.
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#4 Old 09-05-2013
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When was the last time you had an alignment? dad [mechanic] always told me when the steering wheel starts to shake, it's time for an alignment.


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#5 Old 09-05-2013
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Still could be the new tires, have them recheck for balance and not out of round.


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#6 Old 09-05-2013
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Quote:
Originally Posted by Gbarringer100 View Post
Still could be the new tires, have them recheck for balance and not out of round.
Certainly could yes..


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#7 Old 09-05-2013
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It's not the wheels/tyres, as a) they're true & balanced & b) it did it before I changed them

As for alignment, that's spot on & the vibration is not through the steering wheel, I feel it through the seat so I think it's drive train related.
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#8 Old 09-05-2013
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Driveshaft center support bearing and mount?
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#9 Old 09-14-2013
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Quote:
Originally Posted by CarolinaBluetec View Post
Driveshaft center support bearing and mount?
I'll get under & take a look.

Do the driveshafts have a centre support? Or do you mean the propshaft?
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#10 Old 09-14-2013
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I think he is talking driveshaft for a car as propshaft is a boat.


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#11 Old 09-15-2013
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OK, this could well be an across the pond terminology issue!

Do you mean the single driveshaft that runs from the gearbox to the Diff (we call that a propshaft)

Or one of the 2 driveshafts that run from either side of the diff to the wheels (we call them driveshafts)
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#12 Old 09-15-2013
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Quote:
Originally Posted by cartoony View Post
OK, this could well be an across the pond terminology issue!

Do you mean the single driveshaft that runs from the gearbox to the Diff (we call that a propshaft)

Or one of the 2 driveshafts that run from either side of the diff to the wheels (we call them driveshafts)
Ok different sides of the pond. That the fun part of this world wide form you lean that things have a different name. Here they are driveshaft and axles.


Still say check wheels and tires for a lost weight (out of balance) or tire out of round. Was the problem before or after putting on the new tires.


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#13 Old 09-15-2013
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Summer tires in cold temps that improve as tires warm? Flat spot or out-of -round tire (could improve as tires warm)? Wheel Balance or bent rim (typically will not change with temp but can be more speed dependent)? Driveshaft and/or universal joint (more speed dependent)? Best guesses????
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#14 Old 09-15-2013
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Smile

Too many beans maybe?

I'll fetch me coat .. (again)
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#15 Old 3 Weeks Ago
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Quote:
Originally Posted by cartoony View Post
My 230K has a vibration which seems to be coming from the rear of the car at almost exactly 40mph (60kph)

It doesn't matter which gear I'm in, & it's worse when the car is cold.

I thought it might be the rubber doughnut in the propshaft, & the vibration reduced as it warmed up, but it looks pristine & there is no play in the prop or the driveshafts.

Has anybody got any suggestions as to where I should be looking please?
Hi this is Jay from Germany...

I have EXACTELY the same problem on my R170 MY1999

Beside all those 'guesses': Did you get a solution for the problem?

Best regards,
Jay
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