I had factory steel wheels and factory tires on my Focus and I recently
got a set of used OEM 16" alloy wheels and a set of new Fuzion tires
and now I'm getting a vibration like the wheels needs balancing.
Vibration appeared right after the new setup.
Vibration becomes bothersome between 60-80 mph, but between 60-65 seems
to be the resonance point. In the daylight, I could see the steering
wheel vibrating at a relatively high frequency.
Having had done these, I'm not sure else I can do.
1. Wheels are OEM Ford from a different trim of the same model and
2. Spin balanced all four wheels, three times. Both readings are below
1/4oz for all four wheels.
3. ForceMatch and Road Force balanced on Hunter GSP9700. ForceMatched
to <15 lbs. All wheels passed the test for wheel runouts in both
radial and lateral.
4. Wheel bearings: No noticeable play.
Any idea what else?