More X3 upgrade goodness from Tro-Nik!
Tro-Nik G30 M Sport front brake upgrade
Notice that there's no bracket. This means that G30 calipers are a direct fit for F25 X3 front brakes. All that's needed is the center bore spacer to adapt the sedan's larger hub bore diameter down to the SUV's hub size. Strange that all of the BMW SUVs use smaller hub bores than the sedans.
I'll figure out the hub bore sizing and post up when I do. If anyone has time to measure or look it up first, please do. It needs to be the hub rotor diameter, BTW, not the wheel bore diameter. They're different. Measurement with calipers would be best.