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Discussion Starter #1
model: 2002 clk55 amg coupe
mileage: 65,000 miles

I am having a bit of trouble with my clk55 amg. About a month ago I took it in for the latest A service at the local dealer. While in the shop it was determined that I needed new front brakes and rotors, a new flex seal for the driveshaft, a new rear differential seal and a new oil pan seal. After picking the car up I noticed a moderate vibration in the steeering wheel at about 40mph through 48mph. I bought new front tires because they were quite worn and the vibration was still there. I then returned to the dealership and they told me that all of the tires were way out of balance and that the problem was fixed. Needless to say there is no change and the vibration is still there.
Could this be a problem with the driveshaft? I am about at my whits end and could use any advice anyone has.
 

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The fact that the vibration is being felt in the steering wheel would have me thinking that it is a wheel balance issue or a suspension/front end issue.

An easy test for a driveshaft problem would be to jack the rear of the car up, so that both the driving wheels are off the ground, and simulate driving the speeds that you mentioned. If you get the shaking, then it is not a wheel balance issue and is quite possibly a driveshaft issue.

Of course, be sure to use prudent safety precautions to do this.
 

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Discussion Starter #3
cracker928,
thanks for the info. i will give those suggestions a try this weekend. I love this car, but this has been driving me nuts. Its nice to have a path to follow.

Mutch thanks
 

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Just to let you know, That about 5% of the technicians out there, whether at a full service shop, or even at a tire shop, really know how to balance tires "correctly"! They can maybe balance the tire, but they're probably not doing it right.

Also, when a vehicle is in the air with the drivetrain spinning, every car tends to vibrate, but the suspension usually dampens them out when the vehicle is on the ground.

Being that the vibration is in the steering wheel, there's probably about a 95% chance that it's in your wheels or tires.

But also, since you just had a your rotors replaced, there is always the chance that your rotors aren't properly seated to the hub.
 

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I would insist on having your tires balanced on a Hunter 9700 or similar machine that can give a road force measurement. INferior equiptment yields inferior results; garbage in, garbage out.
 

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Phaed,

What is your take on balancing methods? I have been told many different things regarding weight placement, including only using the adhesive, only doing the inside face crimp-ons, and only doing the outer face crimp-ons, or both inside and outside. I would think only the adhesive to be best, as the net balance (pending placement of the weights) would likely be the the same as doing the inner and outer crimps. Also, there is the cosmetic issue of the outer weights....
 

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The best way to balance a tire is a dynamic balance (2 weights). Static balancing (1 weight) will only balance a tire in a rotation (kinda hard to describe), while balancing a tire dynamically will balance it not only rotationally, but also from side to side (like I said, kinda hard to describe and put into words). The best way to balance a tire dynamically is to place the weights as far away from the center line of the wheel as possible. This will give you the best dynamic balance. So if your able to use clipon weights, this is truely the best way. But if you can play tape weights very close to the edge, it really won't make that big of a difference. AMG wheels don't have a lip to use clipon weights. To balance an AMG wheel the best would be to use tape weights on the inside right on the edge of the wheel, and on the outside lip on the edge of the wheel (you don't see this too often cause then the weight is out in the open). Most of the AMG wheels have an offset that allows you to place both tape weights on the inside of the wheel without really any problems though.

Sorry, I used to work at Discount Tire Co. for a good 4 years, I get alittle carried away when it comes to balancing.

And Hunter does make hands down the best tire balancers! If you can find someone with a road-force balancer, and they know how to use the thing properly, that's the best way to go!
 

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Sorry, nuthin!
That is exactly the type of answer I was looking for.
Thanks!
 
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