Does anyone know the piston bore for the front and rear calipers. Per RealOEM.com and Maximillian The front piston repair kit is #34111153208 May be an ATE FN-57 (Caliper Assembly is FN-57/25) ( ??? 57/25 may mean 57mm or 25mm ) The rear piston repair kit is #34211153194 May be a 33mm Bore and a FTE product What is the difference between the E28 535is and M5 Master Cylinder? Info below from RealOEM.com E28 535is Master Cylinder #34311153053 is different PN from E28 M5 Master Cylinder #34311155270 but same size and type: 23,81MM ATE
I'm not sure what the answer is, but I know what the answer is not. It is not 25mm. I could believe 57 ...
Thanks for the reply. It is 57mm for fronts and 33mm for rears. I found info on a European manufacturers website.
