radial tire
US /ˈreɪ.di.əl ˌtaɪər/
UK /ˈreɪ.di.əl ˌtaɪər/
1.
a type of vehicle tire in which the ply cords are arranged at 90 degrees to the direction of travel, providing better grip and longer tread life
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Most modern cars are equipped with radial tires for improved performance.
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You can tell it's a radial tire by the way the sidewall bulges slightly.