Definition: The difference between leading edges and trailing edges of the front wheel and tire assembly, measured at the spindle.
Purpose: Minimize tire wear and rolling friction
Too much Toe positive or genitive: 1. Rapid tire wear on outside edge is to much positive toe. Inside tire edge would mean to much negative toe. 2. Extreme vehicle wandering or shimmy .
With Lafayette’s perfect roads it is crucial for your vehicle to be aligned once a year. As your vehicle steers itself into one of many potholes we have, with every jolt to
the suspension your alignment numbers move. This is why once a year you should have your vehicles alignment checked. Toe Angle is about 90% of premature tire wear.
Definition: The forward or backward tilt of the upper ball joint, or top of the strut, relative to the lower ball joint.
Purpose: Caster affects steering stability and steering wheel returnabilty.
Positive Caster: The upper ball joint or top strut bearing is toward the rear of the vehicle in relation to the lower ball joint as viewed from the side of the vehicle.
Negative Caster: The upper ball joint or top strut bearing is toward the front if the vehicle in relation to the lower ball joint as viewed from the side of the vehicle.
Symptoms of Negative Caster:
Steering wheel shows lack of returnablity after a turn.
Steering is touchy at high speed (wander or weave).
Definition: Inward or outward tilt of the top of the tire.
Purpose: Adjustment centers the vehicle’s load on the tire, eliminating pull. Proper adjustment reduces camber tire wear and pulling.
To much Positive Camber:
Wear on the outside of the tire.
Extra wear on the suspension parts with positive camber.
The vehicle will pull to the side with the most positive camber.