Quote:
Originally Posted by YunzyE90
Thank you for your reply.
To be honest, I have heard they are quite a common problem? As from manufacture they used cheap/ball like materials which ultimately lead to the failure of many diffs on the E90. I’m no expert too, what so ever haha. But yes it’s already in motion, I thought reconning a diff is a better option? As bearings and seals will be brand new. I am being charged £300, so average price really. And the risk you run with buying a second hand diff is you have no idea when it’s going to go again. Giving the mechanic a call tomorrow, let’s just hope it’s only the bearings and seals, not the gears!
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Yes you are right, it's a common issue with 4 cylinder diffs. They're pretty rubbish. 6 cylinder diffs (except 323i) are pretty much trouble free.