A wheel balancing machine spins the wheel and determines the locations and amounts of vibration. 

The wheel balancing machine splits the tire into two halves and measures both lateral and radial forces on each side of the tire's center. 

Weights are added to each side of the wheel to correct the imbalance.

The average wheel balancing cost ranges between $30 and $100 for all four wheels of your car. 
However, it can cost you approximately $10 to $15 per wheel as dictated by your vehicle's make and model as well as the rates offered by the service provider.