A large part of clutch lifespan is down to the style of driving - I've just bought another older BMW for 'research' purposes and it has 210,000 miles on the clock - yet the clutch wear figures for the automatic gearbox are better than my other car with the same gearbox and just 90,000 miles.
I never believe sellers when they proclaim the car 'has spent its whole life on the M6' - but it looks like this was actually true!
My old 75 had 190,000 miles on the original clutch and hydraulics, and aside from being a little heavy was perfectly fine too
