High frequency vibration from the rear?




I'm wondering if anyone is noticing a high frequency vibration from the rear suspension? I believe that I am feeling something.... But not sure( throughout the speed range)
I'm thinking that it is more of a driveline issue being such a high frequency. I know that the 550 guys seem to be having issues either with brake rotors, pads, or swapping tires (incedently, we share the summer tires with them but not the braking system)
I'm running my 22s with Pirelli Zero tires..... So until I put the OEM wheels back on I can't go to the dealer as they will surely point to my tires.


