Knocking / Crackling / Ticking / Rattle noise BMW E90 N54 335i on cold start

Diagnostics:

Problem solved !
I’ve replaced the following parts:

Part# 11287563927 Tensioner
Part# 11287628652 Belt
Part# 11287557851 Lower Idler Pulley
Part# 11287556251 Upper Idler Pulley

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