I've had the same problem with my W210 E55, went through tires like crazy. Camber was way out. I heard about these alignment bolts and went to the local dealer to buy them. While I was there, I visited the alignment rack at the shop. Tech was installing these very same bolts in a new CLK. "I hate to do alignments", he said, "it's still pulls, but it's better than it was-best I can do".
OK, that ruled out this dealer for alignments. I researched and found
http://K-MAC.com , a company that makes eccentric alignment bolts. Bought them, had them installed and the car aligned by very good local shop. Now the alignment is dead-on-balls-accurate!
Cost you ask? Caster/Cabmer kit shipped $400. Install & align (6 hours) $600.
I think this was the most expensive alignment in the history of the planet, but if you like you car to be perfect, why play games with half way solutions?
Good luck!
Gary