BMW tried to fix this problem by placing a cross member on the front two mounting points of the subframe. This constant loading and unloading weakens the sheet metal and causes it to fatigue and separate from the chassis. ![]() This happens because the rear differential transmits the torsional load from the engine through the subframe, then into the chassis. The mounting points can rip out from their spots in the sheet metal. ![]() The E46 rear driveline and suspension have an unfortunate problem in the rear mounting points for the subframe. The E46 rear driveline and suspension have an unfortunate problem in the rear mounting points for.
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