My car has started making a pretty loud rumbling / whirring noise at speeds over 30mm and the faster I get the louder the noise, its coming front one of the front wheels so I suspect it is a wheel bearing! My question is...is this a hard part to fit myself, is it just a case of dropping the disk off and brake shield to access to bearing, undoing a few bolts and bobs your uncle or is it much more in depth? Money is pretty tight at the minute and a local garage want £100 for the bearing and then £120 to fit it which seems pretty steap! Also I have been looking around and they seem to vary so much in price does anyone know the part number for this I have a 2003 A3 2.0FSI. Looking at images some seem to have a 3 hole fixing on the back and some a 4 hole fixing, what is it i need?