The ETK shows a "blasted" M-Parallel spoke wheel as well as a wheel that doesn't have the "blasted" designation. Any idea what the differences are? Someone made the unfortunate choice of chroming the M-Parallels on my 1999 740i and I'm beginning to yearn for the "original" finishes. Thanks!!

Dunno for sure. I'm assuming that the "blasted" wheels are sand-blasted, and have a very flat gray finish. Definitive answer anyone?

You are basically right. It is a flat grey finish.