[cjesse44]

2002 EWagon 2wd 167,000 miles. I have put my summer tires on and now have a vibration. Obvious answer is tires and possibly rear wheel bearings but balanced tires and had checked for bend in rim. Lifted each rear (front bearings new)and check wheel bearing, seem tight, but when lifted I noticed seeping on rear diff. I changed fluid about 10,000 miles ago. Can vibration be low on fluid or needs thicker viscosity? Or can it be the prop shim I have also read about putting diff out of alignment? Motor mounts and trans mount changes also about 10,000 miles ago. Any thoughts would be appreciated, I do much hwy and around 60-80 mph its irritating, mostly closer to 80.

Thanks

 

[Kajtek1]

Put winter tires for test drive.
Over the years I had several tires, where internal reinforcement moved, making a bulge that for some time it was invisible to untrained eye.

 

[Check Codes]

^^^ Plus two.

Bolt the winter tires back on and if the vibration is gone, you know you need new tires.

Now if you don't have a second set of rims, so you have to pay to mount and balance the tires, you might instead rotate the 3-season tires one spot at a time so you can see if you can isolate the vibration.

But if you had no vibration until you swapped tires, I wouldn't be looking at other possible candidates. If it looks like a duck and walks like a duck and quacks like a duck, you don't think goose.

Good luck.

 

[cjesse44]

Thank you Gentlemen but I swapped winter tires for summer on my amg rims and the rims are staggered so I cannot even switch around. With winters on I would get a constant humm and similar vibration when on dry pavement due to aggressive lugs on snows. So this is why I am thinking Goose. Any thoughts on differential being a culprit, or shim?

 

[Check Codes]

Thank you Gentlemen but I swapped winter tires for summer on my amg rims and the rims are staggered so I cannot even switch around. With winters on I would get a constant humm and similar vibration when on dry pavement due to aggressive lugs on snows. So this is why I am thinking Goose. Any thoughts on differential being a culprit, or shim?

Ah, yes, the familiar game of "hide the ball and only reveal a little bit at a time..."

I don't know why the differential would be a culprit, at least for a vibration. You can always try the shim, that's very quick and easy. Pull it out, see if the vibration changes at all. If it does you can pursue that angle, if not, put it back and move on to something else.

 

[cjesse44]

I had discounted the tires as a cause so I didn't expand on that, I wasn't trying to hide the ball :wink. Sorry for confusion. Has anyone come across a DYI for shim, I found pics but no instructions. Also do I need to worry about weeping on diff and maybe should I check u joints for prop shaft?

Thank you:thumbsup:

 

[Kajtek1]

So we went from "now" I have vibration to "I had it before" ?
You do have spare tire? Put it on and see what will happen?
When I had suspicious tires, I would lift the wheel, put a box or block of wood on the pavement as a marker and turn the wheel seeing if there is any change in the distance between thread and marker.