I'm using the Z4 manual pedal which is considerably more svelte than an E90 pedal or anything else. The usual route is to use an E46 pedal and make a bracket and some epoxy, but I think this worked great.
The pedal (P/N 35426853176) is meant to be mounted with an allen head bolt through the baseplate, so I welded an M6 nut in front of the e30 bracket for it.
The rear has a cavity where a catch plate grabs the top of the pedal and secures it from lateral movement as well as rocking forward. Conveniently, the e30 bolt hole sits exactly in that pocket so it was a quick matter to fabricate a plate. It slides down onto the plate and is then bolted at the bottom.
Rock solid!
Comparison of the two pedal styles. The Z4 style (left) is over 1/2 lbs lighter and the plunger is more robust. BOTH of them have the recess in the back for the catch tab. They work the same, but the plug is different between them.
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