anyone know of the cure for excessive wheel judder between 55-85mph...
also passenger side front brake judder always?

none of these items are air suspension related, as this has been done already this year...

 

if the wheels are vibrating under braking conditions then your rotors are warped and need to be either resurfaced or replaced. if you choose to replace dont go cheap, as the allroad is a heavy car and demands a heavy duty rotor, if you go cheap you will be in the same boat shortly. (also wouldnt be a bad time to change the pads also.

if it judders under normal driving at highway speeds you need a tire balanced, and while the wheel is off I would resurface where the wheel contacts the hub(it could get a bit rusty and could cause vibration sometimes.