Patent ID: 6502611
Filing Date: 2003-01-07
Classification: B60C

Abstract:
A pneumatic racing cart tire adopting a bias ply structure in which plural carcass layers are disposed so that cords cross each other between the layers, and having an aspect ratio of 55% or less and an outer diameter of 300 mm or less, wherein a cord angle to a tire circumferential direction of each of said carcass layers is set to a range from 27 to 37Â° at a position of a center line of the tire, and a surface shape of a tread portion is formed to be straight to a tire width direction only in a region of 60 to 75% of a tread width determined symmetrically of the center line, wherein the cord angle of said carcass layer at a position in the straight region of said tread portion other than at said center line is set to a range from 95 to 105% of the cord angle of said carcass layer at the position of said center line and the tread rubber thickness in the shoulder region of said tread portion is set to a range from 90 to 110% of the tread rubber thickness at said center line.