Due to a stuck rear brake caliper the rear disc on the o/s of wife's 2000 (V reg) A4 1.9Tdi has become badly corroded.

I've removed discs (the type with the bearing races pressed into the disc assembly ) and obtained new. The garage that I use for more difficult jobs advised me not to use the original ABS rings as they are only an interference fit on the disc and will almost certainly be loose on the new disc and cause the ABS to malfunction.

I rang GSF and ordered the discs and pads plus the ABS rings and even sent wifey along with an original disc to ensure we got the right ones.

The old ABS rings are thin pressed metal with holes punched in wheras the replacements supplied appear to be cast toothed rings.

I'm guessing that the ABS works on a proximity detection of the metal but can anyone confirm please that the toothed ring is an aceptabel replacement for the punched hole version.

I'd rather not have to strip it and do the job twice.

Thanks in advance