If there was any way to prove it, I'd bet dollars to donuts that the rims were swapped-out on the showroom floor. Someone bought the car next to it and wanted 16" Fuchs instead of the 15"s it had. They switched them to make the other car go away. No one would ever go and switch the other way, unless maybe if his wheels were stolen and the 15s are replacements.
I'd listen to javadog, he knows these cars.
