Timing chain noise

[Zulqarnain]

Hi, I have got bmw 5 series 63 plate with 161k miles. Yesterday I got car engine oil and filter changed and soon after that, car starting making noise from engine. I took it to few garages today and they all saying timing chain needs replacing. I'm struggling to understand there was no noise or problem like this before yesterday before car was serviced. What really happened within an hour? Is it actually a timing chain or can be something else ? Any advice or comments ? Many thanks

[Greydog]

Hi Zulqarnain

Welcome to the Forum

Sadly without seeing or hearing the noise who can tell. Plus not knowing which engine 2.0 petrol 2.0d 2.5i petrol 2.5d 3.0i 3.0d the list goes on. At 161k I would not be surprised if chain guides and tensioner needs changing 

Good luck

Dave