Longacre Toe Plates are the quickest and simplest way to measure toe-in. All of Longacre's alignment tools are track proven and designed for accuracy, ease of use, and made to get professional results at a budget racer's price. It is affected by wheel or tire runout. Formed Aluminum, rigid design for accuracy. Rest one of these plates against the tire on each side and use a tape measure. Longacre Toe Plate comes with two tape measures.