86 4000 Quattro Front End Vibration

[wallaceno1]

86 Audi 4000 CS Quattro vibrates at highway speeds. Also on braking at lower speeds. Just got tires balanced and checked for belt shift as well as rotors out of round all OK. Vehicle was just inspected in PA where they check front end play - said OK. Any ideas as to what could be the cause. I am at a loss and cannot stand the vibration in the steering wheel, seat and floor. Thanks for any help.

Wallace

PS: Front brakes are brand new and same condition existed prior.