TL;DR Guy selling car on ebay doesn't know what he has, refuses to believe he's wrong. Billy Madison reference.
So, as I usually do, I recently found myself looking at classic cars on the internet. E-Bay, in this case. I happened upon a really clean looking BMW E12 528i in texas HERE.
When I went to read the vehicle description, I saw the following:
Note where I've highlighted the specifically mentioned M5 wheels. Wait a second, that's not what I thought I saw...
Those are 330 sport wheels. Hmm. "Maybe he just doesn't realize", I said to myself. "I'll just write him a quick note." This is what happened:
I then received this as a reply:
That's it. It was time to exercise the caps lock button, aka cruise control for cool.