Now, I don't know why this happened but,,

These two wheels were sprayed with the Revell chrome at the same day about a year ago. The one with the tire is printed. The one without a tire I resin cast from a master I did myself years ago.

As you can see, the printed wheel as dulled significantly since I did it. Both looked the same when first done. Both have been primed with Duplicolor sandable primer first.

Steve-O, who printed the wheel speculates that it may have been the printing resin he used to make it , I don't know but it seems possible as I've only had this happen with this set of wheels.