In general, chrome plating is hard and expensive to do well and applied to steel, will eventually get holes and rust. It can also suffer from hydrogen embrittlement, but wheel products should be properly baked to get rid of the hydrogen produced by the plating process.
Stainless steel can rust, but it's hard work and on a car, very rare. On a boat in salt water though, rust stains can occur.
Colour wise, chrome is white, with stainless steel being a bit more yellow. Not as yellow as nickel, but can pass for it whereas chrome never will.
For a modern car, if it has wires, stainless steel makes most sense as although spoked alloy rims can look super, I'm suspicious that electrolytic corrosion between them and the spokes could occur.
