Join Date: Sep 2012
Location: St. Clair Shores, MI, USA
Re: Making spare keys difficult?
As Patrick said, the problem is most likely due to the fact the BMW keys are made of steel, not the brass or (cringe) aluminum of most other keys and blanks.
They told me the steel blanks chew up the cutter wheel much much faster than the brass blanks do, and they cut slower, so your average hardware store kid will spend the usual amount of time to cut the brass key, and probably not cut as deeply as needed.
My BMW dealer sent me to a "real" locksmith to get the blanks cut, while this guy was rarely in his shop to do it, I found another locksmith near me, told him "these are steel blanks, I'm willing to pay more to get them cut", and they worked perfectly (and he didn't take my offered extra money).