[shorod]

Was the vibration present before the tires were balanced? If not, then suspect the balancing. If so, then check the tires for scallopping or odd wear. Have the front suspension components inspected. Are there any loose parts such as ball joints and/or tie rod ends? Are the struts shot?

If everything checks out, then try swapping the wheels front to rear. Does the vibration change (vibration felt more in the seats than in the steering wheel)?

-Rod