The CV Joint big ball bearings last the life if the car, they easily last some 300K-400K miles.
They fail mostly bc of torn boot, allowing debris to get in.
If the owners of the vehicles routinely remove the axle every 100K and replace using GKN boots, then the CV joint lasts forever.
Most axles from local auto parts are made in China with questionable quality.
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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
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