I inadvertently bought two sets of brake shims thinking front and rear axle but after receiving, found out they only make front shims for M3 and 1M brakes. Model number D0918, 0.5mm.
I can return to company but thought I'd see if there was anyone interested on the forums. I paid $89 plus $5 S/H so paypal me a $90 gift and this set of 4 titanium shims belong to you.