Morning Bubba
Are you telling us your indicated mileage has risen from 63000 to 180000 ?
If that is the case then it needs some checking, BMW store mileage in 2 places the Instrument Cluster and the Footwell Control Module it could be that one or the other has been changed but not registered to the car correctly and now mileage has reverted to it's original or it could be the car was clocked at some time in it's life
Dave