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diamondnik · 11-19-2010, 10:14 PM

I made an accidental discovery today. I bought what I thought were e36 m3 rear calipers to be used with adapters from 300mm.de. However, what I got were e46 m3 calipers 328/20 with 42mm piston (even though the piston measures 41mm). I noticed today that these carriers bolt on to the Ti axle (exact bolt spacing). Also, the sliding pins have the same spacing as Ti units. This means that e46 m3 rear calipers bolt onto Ti rear axle, and potentially you can install those calipers with Ti sliders, or any combination thereof. The only thing I've been unable to check so far is how far out these go, because they might not work, even with a 294 rotor diameter.

11-19-2010, 10:14 PM	#200
diamondnik Junior Member Join Date: Dec 2007 Location: Ontario Posts: 29 iTrader: (0) Photo Gallery	I made an accidental discovery today. I bought what I thought were e36 m3 rear calipers to be used with adapters from 300mm.de. However, what I got were e46 m3 calipers 328/20 with 42mm piston (even though the piston measures 41mm). I noticed today that these carriers bolt on to the Ti axle (exact bolt spacing). Also, the sliding pins have the same spacing as Ti units. This means that e46 m3 rear calipers bolt onto Ti rear axle, and potentially you can install those calipers with Ti sliders, or any combination thereof. The only thing I've been unable to check so far is how far out these go, because they might not work, even with a 294 rotor diameter.