25,000klm or 15,000 miles and im currently having my second FD replaced.
The first one presented with about an inch of lateral movement at the back wheel when I was about 1300 miles from home and having only done 6,000 miles.
Last Saturday I was giving her a wash and did my normal tyre inspection while I was working her over with the chamois and got a sick feeling in the guts when I gave the back wheel a spin and heard an awful rumble.
Its quite amazing how conditioned one can become to failures on these bikes. When my last one failed and stranded me while on holidays i was outraged by the shoulder shrugging attitude of the dealer that repaired her.
This time I am actually finding positives in the fact that it didnt strand me and that I discovered it 4 weeks before my extended warranty expires.
I was actually joking with my local dealer yesterday that perhaps BMW could make FD's a service item.
Here in OZ service intervals are every 10,000klms. My first one failed at 9,800ks or 1st service and this one at 24,600klms not far from the second service.
If it wasnt so fuc#&n serious it would be funny
P.S. yes the oil was changed 1000klms after it was fitted.