Vibration problem with a new GL550
Since I got the GL550 two months ago, it had a vibration at speeds above 40mph. Multiple tire balancings and road-force tests could not resolve it. They even put 5 new tires (yes 5, because they first put 4 new ones and subsequently changed one of these with another new tire) improved things a little, but the vibration is still there. The technicians are now trying to convince me that this is "normal" for these huge 21'' AMG wheels, but I refuse to accept that a $95k car should have a vibration, especially a Mercedes Benz.
To prove to myself that I am not going crazy, I had several of my friends testdrive my car and they all said they feel the vibration. I also went and test-drove a brand-new GL550 (wasting the poor salesperson's time) just to check if all GL550s have this problem. That car also had a similar, but less pronounced vibration.
Another issue is a strange "scratching" feeling in the steering wheel when the car is moving, especially noticed at slow speeds (below 40mph), as if something is scraping against the wheels or in the steering column. It is there when the car is in neutral, so it is not the transmission. It is not a brake pad that is clamping, because the car does not pull on either side. Again, my friends who testdrove the car felt it too... Maybe this scraping has something to do with the vibration as tires are perfectly balanced.
How are other owners of GL550 feeling their ride? I have the wood steering wheel which is probably more sensitive.
To me it's either a function of the electronic steering, but feels more like a muted brake catching (warped rotor).
Glad I'm not crazy.
Since I got the GL550 two months ago, it had a vibration at speeds above 40mph. Multiple tire balancings and road-force tests could not resolve it. They even put 5 new tires (yes 5, because they first put 4 new ones and subsequently changed one of these with another new tire) improved things a little, but the vibration is still there. The technicians are now trying to convince me that this is "normal" for these huge 21'' AMG wheels, but I refuse to accept that a $95k car should have a vibration, especially a Mercedes Benz.
To prove to myself that I am not going crazy, I had several of my friends testdrive my car and they all said they feel the vibration. I also went and test-drove a brand-new GL550 (wasting the poor salesperson's time) just to check if all GL550s have this problem. That car also had a similar, but less pronounced vibration.
Another issue is a strange "scratching" feeling in the steering wheel when the car is moving, especially noticed at slow speeds (below 40mph), as if something is scraping against the wheels or in the steering column. It is there when the car is in neutral, so it is not the transmission. It is not a brake pad that is clamping, because the car does not pull on either side. Again, my friends who testdrove the car felt it too... Maybe this scraping has something to do with the vibration as tires are perfectly balanced.
How are other owners of GL550 feeling their ride? I have the wood steering wheel which is probably more sensitive.
Is this a "heard" vibration or just one that you "feel"? If it is felt, do you "feel" the vibration in the steering wheel or are you sensing this in the whole vehicle?




I will post an update if anything changes.
For the scratching sound in the steering wheel, it makes sense that it might be related to the electronic-dynamic steering system. It is not the breaking systme, because the car would steer to that side if a warped rotor is catching on the calipers, right?
However, my guess is more trivial. The hunter dsp balancer at the dealer is bad and you need to take your truck to another outfit with the same machine. In other words- your tires are not balanced and your dealer's machine is bad.
It is also very possible that you have a runout rim that will balance (road force arm does not press down with the same force the truck does), so when on the machine it will balance, but when on truck it will wiggle and vibrate and also cause the scratching feel. Have them check runout of wheels and swap the one with the most run out. Of you are feeling it in the steering it is a front and you can tell which one it is by slowly driving on good asphalt next to a concrete barrier (to better reflect sound) on the left and on the right and listen on which side you will hear it outside (you will). Alternatively you can just drive on nice asphalt at low speeds and turn slightly to the right and listen- then run slightly to the left and listen again. If the scratching feel is stronger when turning right - it is your left front and vice versa.
Another possibility is that you have a bad wheel bearing and that is how you get the scratching feel as well as the vibration.
Lastly if tires are balanced properly what you might have is a bent brake rotor or driveshaft with fallen balancing weights.
And Ofcourse alignment. But unless you hit something it is unlikely that it will be off after such a short period of time.
Let us know. It could be many things.
Btw, todorcho sounds very... Bulgarian
Last edited by alx; May 16, 2013 at 10:05 PM.
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I will report back if we have a resolution with these issues.
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Just contacted the local dealer here in Sweden. Will be back, hopefully shortly, with their answer.
occasional vibration at 40-50, but i think thats the particular road i use..
otherwise smooth- already spoke with my dealer- will have them change brakes and rotors soon. will also have them do balancing and rotation.
i'm wondering if it could be the tires- my pirellis are very smooth but the vibrations under braking i think is warped rotors (known issue- heck i can feel the back rotors are not even)
but regular driving- may be tires?
good luck..
looks like this vibration issue is very common- feel it more as you drive more miles..
i'm at 8K +.. didnt feel much prior due to snow and bad road conditions either .. lets see whats done about this..
Since I got the GL550 two months ago, it had a vibration at speeds above 40mph. Multiple tire balancings and road-force tests could not resolve it. They even put 5 new tires (yes 5, because they first put 4 new ones and subsequently changed one of these with another new tire) improved things a little, but the vibration is still there. The technicians are now trying to convince me that this is "normal" for these huge 21'' AMG wheels, but I refuse to accept that a $95k car should have a vibration, especially a Mercedes Benz.
To prove to myself that I am not going crazy, I had several of my friends testdrive my car and they all said they feel the vibration. I also went and test-drove a brand-new GL550 (wasting the poor salesperson's time) just to check if all GL550s have this problem. That car also had a similar, but less pronounced vibration.
Another issue is a strange "scratching" feeling in the steering wheel when the car is moving, especially noticed at slow speeds (below 40mph), as if something is scraping against the wheels or in the steering column. It is there when the car is in neutral, so it is not the transmission. It is not a brake pad that is clamping, because the car does not pull on either side. Again, my friends who testdrove the car felt it too... Maybe this scraping has something to do with the vibration as tires are perfectly balanced.
How are other owners of GL550 feeling their ride? I have the wood steering wheel which is probably more sensitive.
occasional vibration at 40-50, but i think thats the particular road i use..
otherwise smooth- already spoke with my dealer- will have them change brakes and rotors soon. will also have them do balancing and rotation.
i'm wondering if it could be the tires- my pirellis are very smooth but the vibrations under braking i think is warped rotors (known issue- heck i can feel the back rotors are not even)
but regular driving- may be tires?
good luck..
looks like this vibration issue is very common- feel it more as you drive more miles..
i'm at 8K +.. didnt feel much prior due to snow and bad road conditions either .. lets see whats done about this..
Good luck
I assume that dealers have run thru correct/varied road tire pressure on GL550, with highway runs with the woner to confirm best handling feeling for that owners.
I hear ya man. Hopefully this trend will end someday and we can get back to practical/logical tire sizes. You don't see F1/Indy/Nascar with these ridiculous low profile tire/wheel sizes, the're about 13"-15". Must be something to it.
Last edited by vertrkr; Jun 18, 2013 at 02:51 AM.
Bob
After good service from local dealer in Sweden, they almost solved the problem.
Some special balancing machine that also turn the weel on the rim made the vibration almost go away. I feel it for a minute or so at about 100 km/h when the tires are cold. I guess I have to live with that. Afterall its 21 inch rims...
i don't know if previous X164 550 owners had the same issue, but those were 21's also. i had an 08 Cayenne GTS with 21's and even wider tires and never experienced any brake or vibration issues in the 3 years and 30,000 miles i had it. the brakes and rotors were the same as put on by the manufacturer from 0-30,000 mi. i was due for new pads and rotors probably when i turned it in, but there was never any hint of braking vibration.
so i think MB needs to step up its game and figure this out. defective rotors seem to be a recurring problem. i'm at 1500 mi and haven't noticed anything yet.
Well said!




