Gouxman, Try not to double post. This is what I posted to your same topic in the "Wheels & Tires" Forum:

I have previously posted the same problem. My 98 E430 has been aligned six times in 15k miles. I am tired of taking it in for alignments. It always floats to the right, never tracks straight on smooth level roads and the steering wheel is never on center. One mechanic at the dealer told me that all W210 tend to pull right and they have to "play" with the specifications to get it right. The toe-in is not correct and the tires outside edge is highly worn. I can tell that the front tires are toed-in just by looking at them from the front.