Not sure how the factory would do a 3-step plating process on the front and only a 2-step on the back?
On '69-up road wheels it looks like the centers were plated first, then dropped in the hoop & welded, then the wheels were painted.
In some online research I found this old thread on a BMX forum where they were restoring rusty chrome plated bike frames with oxalic acid (it's a l-o-n-g thread):
http://www.vintagebmx.com/community/index.php?showtopic=4004702&st=0

I'm still hesitant to drop a wheel into this solution, so that's why I'm curious about this vinegar/salt/lemon mixture.

Sorry for the hijack, but this thread is perfect timing.
Anyone on here use either of these solutions on chrome parts?