Talking about tire balancing, it seems that the tire weights you get at the typical tire store never fit as well as the original metric weights fitted at the factory. While washing my wife's C230 yesterday, which had new tires just about a month ago, one of the wheel weights felt loose. I was able to pull it out by hand.

Because of this, usually I ask for stick-on weights (from inside). This means before going to the tire shop I have to remove all wheels and clean the inside of the rim. The tire store jockeys will just stick the weights on all the accumulated brake dust, and you'll be lucky if it's on there by the time you get home.

If you go the the Mercedes dealer for tire balancing, do they use the original metric weights?