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Abstract
The effect of tire material on the prediction of optimum shapes of tire treads is analyzed using the displacement potential based finite-difference technique. From the distribution of no-slip shearing stress along the contact surface of tire treads a relationship is established between the tire-tread sections and the frictional resistance required to keep the contact surface free from lateral slippage. Three different tire materials, such as natural rubber, original truck-tire rubber, and commercially available retreading tire-rubber, are considered for the present study. From the comparison of the calculated coefficient of friction with that available between the tire and road surface, optimum values of tire-tread sections are determined for three different tire materials, which ensure no lateral slippage of the contact surface on the road.