I am still puzzled how the wheel trim rings were given the finish they have. I normally just polish all the metal. I got one of the buffers on sale at Grizzly, and one of the kits with instructional video from Eastwood when it was on sale a couple of years back. I have been very pleased with both. Are you sure the trim rings are stainless steel? I have no problem with making stainless steel shine like chrome. Trying to fix chrome is another story for me. The chrome plate is normally so thin that by the time I work out a scratch, I end up burning through the remaining chrome plating.
As far as what I have done so far, I slowly worked out dents by using an anvil and different shaped wood blocks and a hammer. I used a block with sandpaper to check my work along the way. Normally when I prepare aluminum to be buffed, I gradually make my way through different grits until I finish it off at 400 grit.
If all else fails, I will just buff them out. It is a very dirty and time consuming process. The bottom line is I like the look of the original finish.