I’ve got an older 5 series and lately I’ve been hearing this dull clunk whenever I shift from reverse to drive, plus some weird vibration at low speeds. Took it to a local garage in Al Quoz and they said the differential might be on its way out, but they weren’t sure if it needs a full replacement or just a proper repair. Been reading up on innovative differential repair options because honestly swapping the whole unit sounds crazy expensive here in the UAE. Has anyone tried rebuilding instead of replacing? Curious how long a repair actually lasts compared to a used or reman unit. I drive mostly highway but the summer heat probably isn’t helping either. Any tips on what to ask the mechanic before I commit?