Moro!
89 000 kilometers with my Xchallenge includes hard life. Driving in Morocco, european and Russia. Also much cold starts becouse I drive also winter. Once dropped in bottom of lake, when ice break under it (Bmw spend three days under water)
Never opened engine. But some problems I remember... Instrument cluster failed on this lake accident. Cluth saft hole fixed, start engine overhaul, swing left hand bearing renew. All bearing on wheels and chain guide renew once or two, dont remember. Also made new front wheel on exel rim. Oil change limit on my use 7500km
Now Front telescopes bushings are final, also idle actuator. Hope I find second hand somewhere.
My friend ask sometimes, is Xchallenge good bike? My answer is yes. Worst problem is original BMW spares prices SUCKS!!!
-Ike from Finland-