Hi All
Had the X1 in for a break fluid service and asked my dealer to checkout a thrum/knocking noise from under the engine.
Apparently there's a PUMA already out for the issue that requires a pulley and a belt to be replaced. Can't remember the full details or numbers, but the new parts will be available around Q3 and there's a special way they have to be fitted!
My dealer showed me a list of details on it, but I don't remember seeing anything about timing chain as mentioned in another thread.
Dealer is going to call me when the parts are in, but said it could be months. There's no issues with driving the car and the dealer has confirmed nothing is going to break. 18d Sdrive (again) by the way
I'll update this post when the issue is fixed.
J.