FIRESTONE P195/65R15 TIRES PRODUCED BETWEEN APRIL 12 AND APRIL 15, 2002, FOR USE ON CERTAIN 2003 MODEL YEAR TOYOTA COROLLA S AND LE VEHICLES. THE RECALLED TIRE SERIAL NOS. ARE W2C6T001402 AND W2C6T001502. THESE TIRES MAY DEVELOP A RAISED TREAD BLOCK AND CAUSE A 'HELICOPTER TYPE' NOISE.