[s-cars] cracked rear subframe - B5 A4

Taka Mizutani t44tqtro at gmail.com
Tue Jul 27 18:59:09 PDT 2010


John-
I've not heard about this with an E30, but the E36, E46 and even E90 have
this issue of subframe mounting points failing. This is with stock cars
without any modification.

The fix for the suspension mounting points on the BMW is to weld in gusseted
reinforcement plates. Although it could be worse- my recent research into
the E36/7 and /8 is that the rear diff is mounted to the floorpan sheetmetal
in those cars- very bad failure mode for that one.

For Lee's problem, I agree- weld the crack, weld in some reinforcement
plates and call it a day.

Taka


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