3 of 4 tires, cooper discoverer lsx P265 / 70R17, failed within 8 months of each other due to steel belts separating at approximately 19 - 20,000 miles. In the last instance I experienced a blowout while driving. All 4 tires were purchased new and in good condition when the incidents occurred. They all have the same D.O.T #: up1ycl71010.

- Miami, FL, USA

Driving my 2003 Chevy Avalanche on pa I -380 tire Firestone wilderness 265/70/16 blow-out on rear driver side cause damage to plastics covers.my wife hear the blow tire and she was thinking it was from truck passing but it was on my car. Stop the car safe and used spare tires to next service shop. Stop in scranton at Firestone dealer and replace blow tire with same brand {aprox 4 months just replace 2 new Firestone wilderness tires on front] I have 25 years exp. On cdl class a and never expect on cars tire blow-out like trucks. I all time care for vehicle im driving and never just drive. Tires pressure ck is all time in my maintenance and kept at 36psi. Firestone dealer refuse to change blow tire with out of charge so I paid $140 for new tire and keep the blow tire for record. Hope not for refund just to keep rounds safe and not have a accident from a car with blow tires.

- South Ozone Park, NY, USA

I went to primm Nevada for a off road race and notice that at high speeds the tires develop a pull to one side. I have had the truck aligned and not able to fix the pull. The tires are pro comp extreme all terrains.

- Ahwahnee, CA, USA

The vehicle was very unstable during crosswinds which caused the vehicle to sway left or right unexpectedly. The tire air pressure was found to be 4-5 P/si lower than the design valve. The pressure was increased to the proper valve brought the vehicle handling and the steering response back to a stable condition.

- Manistee, MI, USA

2003 Chevrolet Avalanche with "Z66" package spare tire is a 16 inch tire. The vehicle is equipped with 17 inch tires. Sales literature indicates that the "Z66" package upgrades all wheels 17 inch wheels. Despite manufacture and dealers claims the vehicle handling is very erratic with 16 inch spare installed. Dealer stated spare is for temporary use only. This is no consolation when the next exit on the highway is 40+ miles away. Manufacture and dealer both state that the tsb released resolves this issue. However, consumers are not provided tsb's in the show room. Problem was discovered when passenger side rear tire went flat. While repairing flat tire it was discovered that the original tire was out of round and could not be balanced even with over 5 oz of weight on tire. Replaced tire with brand new tire which required 3.5 oz weight to balance indicating bad rim. Dealer and manufacture both state that is normal amount of weight for 17 inch tires. The 3 other tires on vehicle have less than 3.5 oz combined weight to balance those. Dealer and manufacture both state problem must have been caused when original tire went flat. Original tire came from dealer with no weights installed and truck had pull to right when new.

- Jacksonville, FL, USA

The front end of the vehicle was misaligned.

- Memphis, TN, USA