Very bad Front end shaking vibration between 60 and 80 on 2001 Nissan Pathfinder

It is rear wheel drive and I have replaced the front wheel inner and outer bearings, and the rack and pinion assembly also had the front end aligned and tires balanced twice. I still get a very bad shaking at the steering wheel mostly between 65 and 75. What else can it be?

by in Tampa, FL on June 10, 2010
1 answer 1 comment
ANSWER by on June 10, 2010
check tires for out of round or balancing
COMMENT by on June 10, 2010
Thanks, probably out of round since the tires have been balanced several times.