The Longacre Analog Durometer w/Plastic Case keeps the highest value racecars at the front of the pack. Longacre Basic Durometer is a trackside favorite with many teams from ChumpCar to Grand-Am.
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Racing Tire Hardness Tester
Tire hardness has a huge affect on your car's performance. A tire too hard won't bite and a tire too soft may wear quickly or even ball up. Also, tire hardness changes during its life cycle. To run your best you must keep track of all your tire's hardnesses. This easy-to-use tool will help you do just that - quickly, accurately & easily.
For the most consistent results rock the durometer from angled back past straight up to angled forward. The pointer will move up to the highest (true) reading, then back down. Record the highest reading reached