realoem.com click on archive, then e34, then plug in the info. Here's what you'll get under brake discs (prices are often not correct though):
02 Brake disc, ventilated, left 345X32 1 06/1994 34112227735 $278.86
02 Brake disc, ventilated, right 345X32 1 06/1994 34112227736 $278.86
And the brakes were standard on late m5's, not an option.
02 Brake disc, ventilated, left 345X32 1 06/1994 34112227735 $278.86
02 Brake disc, ventilated, right 345X32 1 06/1994 34112227736 $278.86
And the brakes were standard on late m5's, not an option.