Goon, that's what I was thinking, got a quote from bmw who said the seal kits were £44 for fronts and £60 for rears. I hear u need a 'special tool' for the rears, do u know anything about this?
Jpeeters and Angus, the car is mainly a road car with maybe 1/2 track days. I'll see how these go and replace if necessary, but ur responses do not fill me with confidence!