Use a dial indicator to measure "lateral runout" on the front wheels. If it's excessive, remove that wheel and measure it again right on the brake rotor with a few lug nuts installed. If you find it there too, the brake rotor is warped or the hub is bent.
You could also have two tires with broken belts, especially if they're getting close to the end of their tread life. You'd find that by having them balanced on a road force balancer.
SPONSORED LINKS
Thursday, September 26th, 2013 AT 11:30 AM