Quaife is a great diff, but they're hyper expensive and they're not good in ice or off road situations. They dont lock up if one wheel has low or now traction, such as if it's on ice or in the air. I had one in my old MR2 turbo years ago. They're quite durable and probably the best diff for a street car though IMO since they require no maintenance and never wear out.



Usually clutch-type LSDs don't really wear out either unless they've been raced a ton. Not that I've ever owned an M5 but traditionally, they are reliable in the long term.

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2003 3.0 5MT Topasblau
Purchased in 2016 and sold in 2024
2012 35d Platingrau