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I removed the right rear subframe radius rod to inspect the bushing. It is made differently than the E53’s. But it appears that the function is the same. The bolt ties the metal center of the bushing to the frame of the car and radius rod. And the outer rubber cylinder is press fit into the subframe. When the bushing fails the flexible part of the bushing breaks and allows the subframe to “float”. On bumps the subframe moves up and down allowing the rubber bushing stoppers to bounce between the frame and the radius rod. I think this is what produces the clunk sound. The bigger the bump the more times the subframe bounces between the frame and the radius rod.
I suspect the broken bushing is the right front. But it is harder to get to because of the plastic panels under the fuel tank. Since I couldn’t find a special too for the E70 to pull and reinstall the bushings I’ve set up an appointment at the shop.
Funf Dreisig
2009 E70 X5 35d
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09-18-2018, 11:52 AM
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