Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
There are a more than just a few considerations here.
One, you say they are "OEM" wheels, but to the best of my knowledge none of the 210/211 series wheels left the factory with chrome plating.
Two, you say they "came off" a 320, but that combined with the chrome suggests that they are either aftermarket or aftermarket replicas. In other words, simply because they were on a 320 doesn't mean they are OEM wheels. And if they're really affordable, that strengthens the idea that they're not genuine.
The offset could be a problem as well.
In addition, you'll need new lug bolts (and maybe custom ones), but without knowing what year the wheels came from you won't know the correct ball seat.
If they are OEM wheels and you can get the part number and offset numbers (cast in the back of OEM MB wheels) and post them that may provide more answers, but given the limited information currently at hand your post cannot be definitively answered.
Last thought...the best person to query about wheel fitment is your seller. If anyone on an internet forum gives you wrong information and you end up stuck with wheels you can't use, you have no recourse (on the other hand, you got the advice you paid for, lol). If your seller can't tell you and is unwilling to accept them back, then maybe ebay isn't the place to shop. There are lots of good retailers out there that sell at a discount and will warranty not only wheels and tires, but also fitment. Thus, unless you are willing to do your homework (which doesn't mean a simple post on an internet forum) to gain the personal knowledge necessary to reach your risk-comfort level for the purchase, then don't buy an unknown product from an unknown seller on the internet.
Take care and enjoy the ride,
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; its inherent virtue is the equal sharing of misery. (Winston Churchill)