Glossary of Terms: Runout
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Lateral runout means measuring the movement or "wobble" of a wheel or tire at the side wall. Radial runout means measuring the out-of-round at the tread surface.