Angular velocity of a wheel

If a wheel has a constant velocity $v$, which point on the wheel has the greatest angular velocity?

I was thinking that either every point has the same angular velocity since $\omega = v/r$, but I wasn't sure if the top of the wheel had the greatest velocity since it is positive $v$ rather than at the bottom of the wheel, $-v$.

• What would happen if different parts of the wheel had different velocities? You can choose whatever coordinate system suits you, it won't alter physical laws. – user140606 Jan 30 '17 at 1:01
• – Farcher Jan 31 '17 at 15:09