The contact owns a 2012 (na) Buick Encore equipped with Continental conti pro contact tires, size: P215/55/R18 (na). The contact stated that two of the four tires continued to lose air pressure. The vehicle was taken to the dealer, but the cause of the failure was not determined. The tires were rotated, but the failure recurred. The manufacturer was notified. The vehicle and tire failure mileage was 18,000. The VIN and dot number were not available.

- Moline, IL, USA

Continental pro contact 215/55/18 unknown damage according to dealership. 2nd occurrence within 2 months. Tire unable to be repaired. Dealership unable to find cause. Leasing Buick Encore 2013.

- Snoqualmie, WA, USA

The contact owns a 2013 Buick Encore. The vehicle is equipped with Continental conti pro contact tires, size 215/55R18 (na). The contact stated that the rear tires continuously flattened. An independent mechanic patched up the tires. The manufacturer was not notified. The VIN and dot number were unavailable. The vehicle and tire failure mileages were 11,800. Updated 8/22/14

- Grand Blanc, MI, USA