Longacre Tire Scribing Tool

Brand: Longacre Racing Products

Toe measurements are more accurate when you measure to a reference line on the tire than measurements taken at the tire sidewall. This tool from Longacre makes it easy to mark a consistent, repeatable line on the tire tread.

Simply raise the car until the wheel is off the ground, spin the tire, and bring this tool in contact with the tread. In just a couple of revolutions, you have a sharp, clear reference line parallel to the wheel centerline. The spring-loaded design makes it easy to use without a helper. After marking both tires on one axle, compare the measurements between the marks at the front and at the rear. The difference is your total toe on that axle.

For use with "trammel bar"-type toe gauges such as the Longacre Toe Gauge Bar, Part No. 7960 (sold separately). Not used with toe plates, parallel strings, or toe gauges which contact the wheel rim or tire sidewall.