Vibration at 70mph 2012 S550 Airmatic 57k mi.
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From: Texas
63 Falcon vert
Vibration at 70mph 2012 S550 Airmatic 57k mi.
Vibration can be felt in seat and steering wheel. Vib is fast short cycle. Does not get worse with speed increase. Much more noticible when off the gas at 70. Vib diminishes when on the throttle.
What are symptoms of motor/trans mounts?
Feels like a worn out u-joint.
Have not tried force balance or wheel check.
I searched the threads. Lots of info but didn't find anything on target.
All comments welcome.
What are symptoms of motor/trans mounts?
Feels like a worn out u-joint.
Have not tried force balance or wheel check.
I searched the threads. Lots of info but didn't find anything on target.
All comments welcome.
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Roadforce balance wheels. Cheapest but if vibration is present in steering wheel and seat it is not it or you have bad tires front and back.
Check engine/ tranny mount. As you go 70 toss tranny in neutral. Vibration gone? Mounts.
Still there? Check driveshaft rubber cakes. Still present?
Check driveshaft balancing weights for missing ones
Check engine/ tranny mount. As you go 70 toss tranny in neutral. Vibration gone? Mounts.
Still there? Check driveshaft rubber cakes. Still present?
Check driveshaft balancing weights for missing ones
Last edited by alx; Jan 16, 2016 at 11:50 PM.
Thread Starter
Super Member
Joined: Aug 2013
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From: Texas
63 Falcon vert
Alx all I could do today was road test the car. On smooth blacktop with tpsi f/r: 37/38. At 75 with vib, dropped to N and coasted till vib stopped at 60. Vib was max at 68-70. Gone at 60.
Ran that cycle multiple times.
Most definitely not motor rpm related. No vib from 800 to 4000rpm.
Will investigate more when I get home this week.
Thanks for the help.
Ran that cycle multiple times.
Most definitely not motor rpm related. No vib from 800 to 4000rpm.
Will investigate more when I get home this week.
Thanks for the help.
Thread Starter
Super Member
Joined: Aug 2013
Posts: 779
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From: Texas
63 Falcon vert
Vibration Road Force update
Alx - Finally had the road force balance done. Bottom line, both front wheels are visually not true. Never have I bent wheels before.
Just how soft are OEM wheels?
Just how soft are OEM wheels?
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Thread Starter
Super Member
Joined: Aug 2013
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From: Texas
63 Falcon vert
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From: Staten Island, NY
2010 MB S550, 2017 MB SLC 300
Incidentally since I am in the market for an S class I did ask my wheel guy if the S class and it's 19" wheels are subject to the same issues as the E class. He said no, not as much. In his experience The E classes and BMW 5 series suffer the most damage to their wheels due to the off set and the very low profile tire. The S class has a bigger tire suited for city use.
The NYC/NJ roads are terrible.
Thread Starter
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From: Texas
63 Falcon vert
For the first time we have a pot hole explosion in hwys all due to record rainfall and unprecedented ballooning oil field heavy traffic. Normally our roads are great. Now it's 2+ years of remaining road repairs. Typically we drive ducking deer and coyotes. Now pot holes are on the list.
Once I get a 5th wheel/tire, I will start the wheel repairs. My concern is after the repair, what is wheel integrity like. Compromised or not?
Once I get a 5th wheel/tire, I will start the wheel repairs. My concern is after the repair, what is wheel integrity like. Compromised or not?
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2010 E550 P2 w/AMG Sport Package + Pano, 2015 Nissan Pathfinder
^My E has the same problem and the tire can be safe if only repaired once for sure. Anything after that can get a lil suspect.
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From: Staten Island, NY
2010 MB S550, 2017 MB SLC 300
Not so much tire failure, but the wheel can and will become bent again because the repair does weaken the wheel a bit. Bent wheels can lead to side wall tire bubbles that can cause tire failure.
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Ah you are talking about rims. Agreed. Once bent it will bent again.
Btw, I have the 20" Amg package on my 221. I have bent all four oem wheels. Finally I said f it and went with 19. Soooo much better ride and zero bent wheels.
Btw, I have the 20" Amg package on my 221. I have bent all four oem wheels. Finally I said f it and went with 19. Soooo much better ride and zero bent wheels.
Thread Starter
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From: Texas
63 Falcon vert
What is your psi after tires are warmed up?
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2011 E350, 2007 CLK350
Ok, I give....how is it that you don't bend 19s?
