Hi all, I've just been told by my very trustworthy garage that my rear diff needs replacing on my 1 series - I suspected as much but was hoping the noise was more related to a wheel bearing than the diff! They were really helpful and rolled the car back over the pit to find out whether it was a 3 bolt or 4 bolt attachment for the driveshaft, its a four bolt (no surprise for some of you on the forum no doubt!) with three body mounting bolts. The car is a 55 plate 118 Diesel 6 speed gearbox. The most important information I seem to need in tracking down a replacement is the gear ratio for this - and without first taking the diff off, I'm not sure how to get to the all important sticker on top to find out the ratio!
Any help gratefully received,