NHTSA Complaint #10597620 — 1991 TOYOTA 4RUNNER

OEM STANDARD TIRES ARE 225/75R15 ON TOYOTA STEEL WHEELS. OEM FACTORY OPTION TIRES ARE W/31X10.5 ON TOYOTA BRAND ALUMINUM WHEELS. THE FACTORY OFFICIAL STICKER SHOWS THE OPTION TIRES AS FACTORY-INSTALLED. THE DRIVER DOOR PILLAR STICKER SHOWS THE FACTORY-INSTALLED TIRE AS 225/75R15. THE PILLAR STICKER IS WRONG DUE TO DEFECT IN THE MANUFACTURING PROCESS. IN RELIANCE ON THE PILLAR STICKER, A TIRE TECHNICIAN INSTALLED REPLACEMENT TIRES BASED ON THE STANDARD SIZE. THE STANDARD TIRE IS SIGNIFICANTLY SMALLER IN DIAMETER THAN THE FACTORY OPTION TIRE. SAFETY ISSUES: 1) SPEEDOMETER ERROR ~10%, CAUSING MISMATCH TO POSTED LIMIT AND FORESEEABLE TAILGATING AND OTHER ADVERSE BEHAVIORS BY SURROUNDING DRIVERS; 2) DEGRADED STABILITY ON HIGH-CENTER OF GRAVITY SUV DUE TO MISMATCH BETWEEN FACTORY OPTION SPARE TIRE AND REPLACEMENT TIRES BASED ON ERRONEOUS PILLAR STICKER. *TR