Smaller vehicles can actually create more torsional vibration. This video is sponsored by LuK, a Schaeffler brand.
Most shops have the incorrect assumption that anything more than a simple balance takes too much time.
When engine vibration is noticeable at idle, especially with 4-cylinder, odd-fire V6 and diesel engines, it is most likely a sign that the mounts are worn or completely broken. These vibrations tend to worsen when the A/C compressor is engaged.
Andrew Markel discusses brake rotor manufacturing, and how the process of balancing a rotor helps prevent vibration during vehicle operation. Sponsored by Auto Value and Bumper to Bumper.
To determine if a vibration is vehicle- or engine-speed related, the easiest thing to do is slip the transmission into neutral and let the vehicle coast when the vibration is most noticeable. If the vibration continues, then the vibration is vehicle-speed related. Likewise, if the vibration subsides, the vibration is engine-speed related.
Binding in steering system, poor returnability, noise, no assist to either or both sides of vehicle, vibration or leaks.