General Information

Radial run out is the vertical distance between the high and low points on the tire or wheel edge.

Lateral run out is the horizontal movement of the tire or wheel.

Radial run out of more than 1.524 mm (0.060 inch) measured at the center line of the tread may cause the vehicle to shake.

Lateral run out of more than 2.032 mm (0.080 inch) measured near the shoulder of the tire may cause the vehicle to shake.

Runout should always be measured off the vehicle and on a suitable balance machine.

Usually radial run out can be reduced by relocating the wheel and tire on the wheel studs (See Method 1). If this does not reduce run out to an acceptable level, the tire can be rotated on the wheel. (See Method 2).