Patent ID: 6209604
Filing Date: 2001-04-03
Classification: B60C,Y10T

Abstract:
A pneumatic tire for passenger cars comprising:a pair of left and right ring-shaped bead cores;a carcass layer in which a plurality of reinforcing cords disposed substantially parallel to each other arc embedded in a covering rubber;a tread portion disposed at an outer side of said carcass layer in the radial direction of the tire; anda pair of side wall portions disposed at the left and right of said tread portion;wherein a rubber reinforcing layer having a crescent-shaped cross-section and at least one sheet of a rubber-filament fiber composite having a thickness of 0.05 to 2.0 mm which is formed from a rubber component and filament fibers having a diameter or a maximum cross-sectional dimension of 0.0001 to 0.1 mm and a length of 8 mm or more are disposed in each of said side wall portions; andsaid reinforcing carcass cords are made of an aliphatic polyamide fiber having a melting point of 250.degree. C. or higher as measured by differential scanning calorimetry.