NHTSA Complaint #10243178 — 1994 GEO PRIZM

WHILE DRIVING ON THE INTERSTATE AT ABOUT 65 MPH, I BEGAN TO NOTICE A VIBRATION THAT WAS GETTING WORSE AS I DROVE ALONG. THE ROAD APPEARED TO BE IN VERY GOOD (SMOOTH) CONDITION SO, AFTER ABOUT 2 MINUTES, I PULLED ONTO THE SHOULDER AND EXAMINED THE TIRES BY FEEL TO SEE IF THERE WAS ANYTHING NOTICEABLE. THE LEFT REAR (DRIVERS SIDE) TIRE HAD A LARGE BULGE IN THE TREAD AREA. THE FAILURE OCCURRED UNDER THE FOLLOWING CONDITIONS: * CAR IS A 1994 GEO PRISM LSI WITH 2 PASSENGERS AND A LIGHT LUGGAGE LOAD * TIRE WAS A WYNSTAR PHASER R23 SIZE 185/65R14 86T M&S * HAD BEEN DRIVING FOR ABOUT 8 HOURS AT 65 MPH * TIRE PRESSURE HAD BEEN PRESET AT 32 PSI * WEATHER CONDITIONS CLEAR AND DRY - TEMPERATURE APPROX. 85 DEG. *TR