Due to the use of a not specified material combination, the tires may develop an uneven shape in the tread area. This could potentially result in tire-vehicle contact, a reduced handling performance and a limited high speed capability. To date, Continental has not received any reports of accidents or injuries in connection with this condition. The exchange program is being initiated proactively to avoid any potential risk to vehicle drivers and other road-users. The affected tires were sold to customers in Europe, Turkey and Russia and solely within the replacement business.