Not to rain on your parade, but the Mercedes factory does NOT produce chrome wheels/rims since the process actually weakens the structure of the wheel.

In short, Original Equipment (OE) wheels from Mercedes are NOT chromed.

However, since US Dealers are independent they are free to sell chromed wheels. Whatever dealer you purchased this from most likely has an account with a chroming service (just like my local dealer does), so in effect these are aftermarket chromed wheels.

:-) neil

PS: I have a set of chromed wheels . . .