C Class(W204) Wheel on E Class (W212)

I was trying to find a cheap wheel than fixing mine or buy a new one from the dealer, I found someone is selling one wheel for C Class. It's still the same diameter 18". I still don't know the width if it is 8" or 8.5". Since the E Wheel is 18"X8.5"
If the C wheel turns out to be 18"X8.5", do you think that's perfectly matching or there is something else I should look for.
Please Advise

I was trying to find a cheap wheel than fixing mine or buy a new one from the dealer, I found someone is selling one wheel for C Class. It's still the same diameter 18". I still don't know the width if it is 8" or 8.5". Since the E Wheel is 18"X8.5"
If the C wheel turns out to be 18"X8.5", do you think that's perfectly matching or there is something else I should look for.
Please Advise
http://www.tirerack.com/wheels/tech/...jsp?techid=101








actually, three sets lol
