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Founder, 1929-2014
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Longacre 50544 Tire Durometer

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Longacre 50544 Tire Durometer
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Longacre 50544 Tire Durometer

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Q & A

What's in the Box

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.

  • Reads from 0-100 points
  • Comes with pouch


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. The durometer must have a rectangular base to do this properly. If you just push straight down you may get inconsistent and inaccurate results.

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Longacre 50883 Tire Marking Pen
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The surface of a tire becomes harder with every heat cycle and even new tires of the same compound can vary a great deal in hardness. If a tire is too soft for the track, it will overheat and may not last the entire race, but if it is too hard, it will not get up to the optimum temperature and traction will be sacrificed. Intercomp's Tire Durometer enables you to make the correct tire selections for any track.

  • Type-A removable tip
  • Reads from 0-100
  • Adjustable face
  • Zero dial
  • ASTM certified
  • Includes case