![]() Too much toe-in causes accelerated wear at the outboard edges of the tires, while too much toe-out causes wear at the inboard edges. Excessive toe-in or toe-out causes the tires to scrub, since they are always turned relative to the direction of travel. ![]() ![]() For minimum tire wear and power loss, the wheels on a given axle of a car should point directly ahead when the car is running in a straight line. Toe settings affect three major areas of performance: tire wear, straight-line stability and corner entry handling characteristics. The amount of toe can be expressed in degrees as the angle to which the wheels are out of parallel, or more commonly, as the difference between the track widths as measured at the leading and trailing edges of the tires or wheels. If the leading edges point away from each other, the pair is said to have toe-out. UNDERSTANDING TOE When a pair of wheels is set so that their leading edges are pointed slightly towards each other, the wheel pair is said to have toe-in. Let's take a quick look at this basic aspect of suspension tuning. Most enthusiasts have a good understanding of what these settings are and what they involve, but many may not know why a particular setting is called for, or how it affects performance. Pointed the Right Way story by john hagerman Camber, Caster and Toe: What Do They Mean? The three major alignment parameters on a car are toe, camber, and caster.
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