Quote Originally Posted by jplacson
Are these reinforcements needed? I mean, is the E34 suject to the same subframe failure as the E36 and E46, which is why these plates are needed?
The name is kinda misleading, I think. These aren't metal plates, and they don't reinforce the body structure like is needed on an E36. If you look at the picture on the website, you can see that they are big blue urethane donuts that take up the space between the rubber subframe mount and the lower brace that holds the subframe mount in place.

They don't prevent the body from tearing (E34s don't have this issue AFAIK), they just take up 'slop' in the rear suspension.