Tire Sidewall problems of the 2004 Volkswagen Jetta

I bought a set of 215/50r-17 91v zexius xi-427 all season radial tires on 07/26/2010 from les schwab tires in California. On memorial day 5/30/2011 I had a blowout on I-215 in las vegas nv called emergency road service and they put on spare. I called les schwab to tell about incident the next day. I was told it was tire seperation by an competitor tire shop. On 6/11/2011 two weeks and 282 miles later I woke up to find I had a flat tire on a different zexius tire, so I put air in the tire and drove the car to tire works a tire shop a mile down the road. Tire works checked the tire for any objects in the tire but found none. They found the sidewall had a crack where air was leaking through and determine it was tire seperation. Upon further inspection they found cracks in the other two zexius tires which the tire specialist said was caused by dry rot! I replaced the zexius tire with another set of tire's due to the lack of confidence in the safety of these tires. I am in current dispute with les schwab tires for a refund for the total cost of tires. Partialy the dispute is whom will pay for shipping the zexius tires back to California as I live in henderson,nv currently. I need help to settle this dispute and exposure to these faulty tires.

A rip appeared in the sidewall of my front tire over the course of several days. The tire appears to be separating. I noticed it after hearing a clicking sound while driving slowly in a parking lot. This was not proceeded by any impact to the tire. The rip is getting larger. Online research into this tire shows that numerous others have had similar tire failure incidents, often resulting in costly repairs and medical bills. I believe that this tire model is defective and should be recalled.

I was driving home 50-55 mph clear night smooth road I had not noticed any signs of my tire being low I have valve caps that show when tire air pressure is low and they all were green than I heard a loud noise and my car pulled to the left I pulled over and noticed my tire had completely separated at the sidewall leaving about 2-3 inches of tire on the rim and the rest was in one piece barley sitting on the rim the tire was made by nankang toursport 611 dot 109n other numbers I found on the tire were 517 2306 z2c, n-2570-3l xr611 radial 195/65 r15 9ih m+s tubeless when the tire blew out and the tire separated it tore my abs sensor wire and im not sure what other damage my alignment is now off as well.