I'm getting the occasional brake shudder at highway speeds. Not all the time so it's not the rotors. So I took a look at the thrust rod bushings that my dealer told me were shot (for the 3rd time in 80K miles) and they aren't fluid filled, but solid rubber. Looks like when the dealer replaced them the 2nd time under warranty that they used the HD mounts, is that even allowed under warranty? Very interesting.

I'll pull them out next weekend and see if I can find a part number on them. If they're the supposed HD all rubber units, they only lasted about 20K on my X. Original ones lasted 39K miles, 1st replacements lasted 3K (yes, 3,000 miles but those were just the bushings so the dealer thought perhaps one was installed wrong by the tech so they put two new strut arms in), 2nd replacement 18K miles, and the ones in there now about 20K.

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'04 E53, 4.4 Sport
'97 E39 528i
'86 911 Carrera, track car
'96 BMW R1100R