pingu wrote:Forego any thoughts of getting it fixed four free unless you have a FBMWSH.
spurs fan in a coupe wrote:Any comments very welcome, helpful ones please as I've had a bad day!
c_w wrote:I would say it was badly executed if they were fixing a problem but ignoring the reason why it failed, so that it happened again. I'd take back to BMW looking like that! What a huge waste of labour taking the car back the bone at the back end and stitching in a new floorplan that was just as weak as the original!
Penny wise & pound foolish. Possibly a case of engineers managed by bean counters.c_w wrote:The replacement diff bracket I got for mine was microscopically thicker than my old one, still far too thin. You would have thought BMW would just think, "lets go OTT and make it beefy enough to handle anything", but they just went and increased it by about 0.5mm which probably according to their CAD increased torque duty by a fair amount but in reality it just too flimsy still.
That kind of makes sense. In which case they needed to beef up the cross member more than the diff hanger, but they didn't. Hence failure for the 2nd time.Deano1712 wrote:I measured the diff bracket at just 0.2mm thicker than the original when I upgraded mine. I did some stress calcs though and found the hanger bracket was plenty strong enough. I think it only fails when the upper floor welds have failed and the cross member starts moving around - the diff hanger cracks as a secondary failure.
Rocketman wrote:I am currently monitoring the spot welds, not drastic yet but some have pulled.
pingu wrote:Rocketman wrote:I am currently monitoring the spot welds, not drastic yet but some have pulled.
Get it sorted. It will get worse.
Rocketman wrote:So can anyone recommend a reliable quality workshop in my area capable of carrying out this job then ?
St Neots, Cambridgeshire but could travel.
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