Oddity In Rear End!

[dhalen32]

I'm going to guess an aerodynamic resonance.

Dave

 

[Bounce]

been @ 110 (3rd gear) w/and w/out side bags (no top case at the time. no problem on my 2003 version.

 

[TruWrecks]

I've been north of 110 with sides and top case with no thumping or odd noises in the Nevada dessert.

 

[kaitsdad]

I would suspect an out of balance rear wheel/tire assembly.

 

[mdisher]

Didn't you park next to a BMW at OEM? I don't know if the BMW Rear Drive Failure Epidemic is contagious or not, but if you noticed I never park close to Dad's RT just in case.

(I'm going with tire balance too at this stage).