265/75R16 9100 miles driven mostly on pavement with loads well within the vehicle capacity and never off road. Tires were rotated several months prior, about 100 miles ago and damage was not noted. Bubble appeared on sidewall which was noticed while parked; Tire shop dismounted the tire to inspect for possible causes and found nothing to explain damage (run flat, left deflated, road hazard damage). Secondary bubble slightly smaller on inside at same location. Smaller bubbles were felt inside tire and a longer, slight bubble follows the bead 1/3-1/2 of the diameter of the tire. Shop manager refused to remount tire due to risk to employees of catastrophic failure, indicating the tire poses significant safety risk if vehicle had been at highway speed and completed its deterioration. Mate to this tire on right rear shows same smaller bubble above the bead about 1/3 of tire diameter.

- Montrose, CO, USA

The contact owns a 2006 Chevrolet Silverado 2500. The vehicle is equipped with federal couragia A/T tires, size 33512.50R/20lt (na). The contact stated that the sidewalls of the tires contained bubbles. The tires were not replaced and the manufacturer was not notified. The VIN was unavailable. The tire failure mileage was 103,000 and the vehicle failure mileage was approximately 100,000.

- Nokomis , FL, USA

The contact owns a 2006 Chevrolet Silverado crew cab with Firestone destination le tires, line size P245/70 R17. The contact was traveling 70 mph when the sidewall blew on the rear driver side tire. The tires were labeled as having a lifespan up to 60,000 miles but the failure occurred at 16,000 miles. The manufacturer was contacted and advised that they had never seen the failure in the manner in which it occurred. There were no repairs. The dot number and VIN were not available. The vehicle failure mileage was 44,085.

- Moline, IL, USA