I 've had vibration problems with my 98 ML320 since new (now 25K miles). The dealer tried aligning/balancing and even replaced the tires saying they were out of round. I've noticed some improvement, but it is still bothersome on road trips. My next action will be to have the tires balanced while on the vehicle. Is this a frequent ML complaint? Any other suggestions?

The tires are big and heavy on this car. I think the on the car balance will improve things greatly.

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Benzmac:
1981 280GE SWB
1987 16V
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