On 56k kms my rear bearings are giving a ratling noise when brakin the rear brake. I hear them when approaching to traffic lights, as the wind noise is really low. I guess they have expired. Anyone else had them replaced? Would you reccomend replacing the front ones as well? Never kept a bike that long so I don' know. My previous TDM850 had worn 3 bearings in less kms (I recall 40k kms). Cheers.