On a related note, I understand the Falken 452s don't come in the OEM size for the rears, will going to 265/35/18 on the rears increase the risk of rubbing on a non-M Z4?
I don't really think the Z4M wheels are distinctive enough to make it look like you're trying to be something your not.
Whilst the alloys are perfectly "nice" I think they're a little dissapointing for an M car.
I may be worth putting a quick ad in the buy and sell section just in case people don't notice them for sale in here. Also, stick them in Pistonheads if no-one on the forum wants them - it's free and where I got mine from.
Just interested to find out how you have gotten on with the Z4M alloys? I've managed to get hold of a set, still with the original OEM Continentals and so was wondering if you had any rubbing issues in the last 6 months of ownership?