What possible causes for suspension to shake and feel unstable above 50mph? on 1998 Audi A6 Quattro

Steering shudders, feels as the wheels are about to disconnect from the front when travelling above 50mph

by in Tacoma, WA on August 22, 2013
3 answers 2 comments
ANSWER by on August 22, 2013
tire balance,tie rod ends, ball joints, upper strut mounts, control arm bushings.. Loose tires..
COMMENT by on August 22, 2013
I have replaced all tie rods, arm bushings, ball joints and fitted new rims and tires. Balancing has been carried out too. Confused...
COMMENT by on August 22, 2013
After replacing all that did you get an alignment? also this ais an all wheel drive vehicle, have you checked the front drive axles (cv joints) and after replacing the stuff was the axle nut torqued propperly? front wheel bearings could also cause shaking..
ANSWER by on August 22, 2013
Also, check and possibly replace the sway bar end links. Other than that, maybe a half-shaft CV joint is starting to fail.
ANSWER by on August 23, 2013
COULD BE SEVERAL ITEMS SEEK A DIAG FROM A GOOD FRT END SHOP