I don't think the pits will come out. The surface is likely ruined at the rust points. You can get them re-chromed, but that's probably around a thousand dollars for four wheels. You can get them refinished in silver, that isn't cheap but will cost less. You could strip the chrome off and paint them yourself, but unless you have a way to powder coat them durability will not be excellent. Maybe try to polish them with some fine metal polish? But, I would try a test area first, as it may just dull the finish. If its
Ok, use the Mothers Buff Ball with a drill to polish them the best you can.