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High-Speed Uniformity

The auto industry demands the highest standards for tire uniformity and quality. We at Kokusai provide laboratory testing for both tires and wheels, including durability and road simulator machines that properly evaluate assemblies.  While all of the diagnostic tests we offer are important to maintaining the highest quality tire performance, such as rolling resistance, fatigue,…

Kokusai’s Frequently Asked Questions – Balance

Q: What are the primary causes of ride vibration within transportation vehicles? A: There are many potential causes.  Everything that rotates can cause vibration if the components are not balanced.  Everything from the tire/wheel assembly to individual engine components such as crankshafts, if not properly balanced, will vibrate at differing frequencies causing different effects. The…

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