With only 670 miles on a new set of tires, an inspection for a completely unrelated reason found that there was a bulge in 3 of the 4 NEW tires. Installed in Jun, issue found in Dec; car is driven very little. Tires were purchased from Tire Rack and installed by Discount Tire. Inspection by Discount tire found the 3 defective tires. They report bulges as "impact damage". I have had one other tire ever with impact damage in 180,000 miles on this 20+ year old car. On this set of tires, there were no incidents, such as hitting a curb or pothole. I have to believe that these tires have a manufacturing defect. For all I know, they had a sidewall bulge from day one. I am replacing all four tires. I have contacted Vredestein customer service, at both domestic and international email customer service contacts. They have not answered, even with an acknowledgement of receipt.

- Mercer Island, WA, USA