OG’s I need your help!
Thread Starter
Super Member
Joined: Dec 2012
Posts: 601
Likes: 6
From: Bay Area
2010 C63 P31 AMG
OG’s I need your help!
Hello all…been a while since my last post. I still have my 2010 C63 P30…been running well until recently. Currently have 170k miles and recently experienced a thumping vibration on my right wheel when cornering left under load (taking a sweeping corner). Differential fluids changed, no change in vibration. Axle and wheel bearings are still original. Axle boots are ok on both axles no issues. I am not getting any audible rumble, grinding or chatter. When cold in the morning I feel like I am going over a rumble strip at 50-60mph and then it disappears aftern3-5 miles of driving, wheels are balanced and alignment is correct,
Mechanic is saying that axle shaft and bearings look ok to him and that perhaps my OE LSD is toast at this mileage. Not 100%. Anyone experience this type of thumping vibration..feels like wheel hop for sure. No thumping when cornering right and left rear is loaded. Thanks for any input you guys have.
Mechanic is saying that axle shaft and bearings look ok to him and that perhaps my OE LSD is toast at this mileage. Not 100%. Anyone experience this type of thumping vibration..feels like wheel hop for sure. No thumping when cornering right and left rear is loaded. Thanks for any input you guys have.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 2,299
Likes: 380
From: Texas
10 C six trizzle
maybe a rear subframe bushing. Try doing some straight line launches and see if it actually wheel hops. I thought I had a blown shock when my car wheel hopped. It turned out the front bushing of the rear subframe (right side - passenger side) had blown and was starting to leak fluid. I can't say I experienced this noticeably while cornering but I'm also not on a track.
Thread Starter
Super Member
Joined: Dec 2012
Posts: 601
Likes: 6
From: Bay Area
2010 C63 P31 AMG
maybe a rear subframe bushing. Try doing some straight line launches and see if it actually wheel hops. I thought I had a blown shock when my car wheel hopped. It turned out the front bushing of the rear subframe (right side - passenger side) had blown and was starting to leak fluid. I can't say I experienced this noticeably while cornering but I'm also not on a track.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 4,057
Likes: 341
From: NJ
2009 SL63 AMG
What's interesting is that the latter symptom goes away once there's a bit of temperature in the car.
If it's just one side / one corner, have you checked and compared some of the basic suspension components like your shocks, springs, mounts, etc.
Thread Starter
Super Member
Joined: Dec 2012
Posts: 601
Likes: 6
From: Bay Area
2010 C63 P31 AMG
Thread Starter
Super Member
Joined: Dec 2012
Posts: 601
Likes: 6
From: Bay Area
2010 C63 P31 AMG
I'm assuming there was nothing of note in the fluid that drained out, and that you used the correct fluid for your differential.
What's interesting is that the latter symptom goes away once there's a bit of temperature in the car.
If it's just one side / one corner, have you checked and compared some of the basic suspension components like your shocks, springs, mounts, etc.
What's interesting is that the latter symptom goes away once there's a bit of temperature in the car.
If it's just one side / one corner, have you checked and compared some of the basic suspension components like your shocks, springs, mounts, etc.
Trending Topics
MBWorld Fanatic!
Joined: Aug 2011
Posts: 5,351
Likes: 1,677
From: Kitchener, ON
2010 C63 AMG
If if both, what happens if no power is applied? (Incase it wasn't obvious. I'm not recommending you rapidly lift the throttle while in a high G corner)
Cornering forces on throttle vs not on throttle affects components differently.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Super Member
Joined: Dec 2012
Posts: 601
Likes: 6
From: Bay Area
2010 C63 P31 AMG
When you say load. Do you mean lateral load (from cornering forces) or longitudinal load (from the application of power) or both?
If if both, what happens if no power is applied? (Incase it wasn't obvious. I'm not recommending you rapidly lift the throttle while in a high G corner)
Cornering forces on throttle vs not on throttle affects components differently.
If if both, what happens if no power is applied? (Incase it wasn't obvious. I'm not recommending you rapidly lift the throttle while in a high G corner)
Cornering forces on throttle vs not on throttle affects components differently.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 4,057
Likes: 341
From: NJ
2009 SL63 AMG
Could be that something wasn't torqued enough (or not pre-loaded before torquing, which is a requirement on a number of suspension components in MB cars per WIS).
MBWorld Fanatic!
Joined: Aug 2011
Posts: 5,351
Likes: 1,677
From: Kitchener, ON
2010 C63 AMG
I know you mentioned the mechanic said the axle shaft looks ok but this really points to a bad CV. If it was my car, that's where I would start.
Bearing would generally make a sound with lateral load regardless if you're on throttle or not. It could just be more pronounced when under throttle load.
Bearing would generally make a sound with lateral load regardless if you're on throttle or not. It could just be more pronounced when under throttle load.
