Chrome is chrome, but they are a chrome-clad wheel. That is a chrome piece of PLASTIC that has 3M taped to the alloy wheel. Not many people know that.
LOL. YouTube has a video of a guy with a blowtorch and 3 hours to remove the cover off the wheel. I know because mine had road rash and I couldn't figure out what the white material underneath was. Not alloy it was plastic.
That being said I wouldn't get too aggressive with an abrasive. I would try different chemicals first.
Vinegar. Straight gasoline. Rubbing compound.
Lightly with a green scrubby. It does look like it's surface contamination and not damaged Chrome.
Be sure to report back.