I have replaced the lower ball joints (both sides) and the front tires (Michellen MXV4+) on my '86 300 E (70K miles) and when I drive down a rough road, I feel a slight vibration at the streeing wheel. On a good road, it is as smooth as can be.

Would replacing the streeing dampener and/or the idler arm bushing kit cure the problem?

I have looked at the inner and outer tie rod ends, and they look ok - no tears or rips on the rubber boots.

Any and all help is greatly appreciated.

Thanks in advance.

hs