What happens if the wheel tire assembly radial runout exceeds the standard?

When the radial runout of a wheel tire assembly exceeds the specified standard, excessive vibrations may occur during vehicle operation. This happens because an imbalance or unevenness in the tire can lead to variations in the contact patch between the tire and the road surface. As the wheel rotates, these imperfections can cause the vehicle to vibrate, leading to an uncomfortable ride for passengers and potentially causing premature wear on suspension components, steering, and tires themselves.

It's important to maintain runout within acceptable limits to ensure optimal performance, comfort, and longevity of the vehicle's components. Driving with excessive runout can also affect handling and stability, further compromising vehicle safety.