2013 Nissan GT-R Owner's Manual - Page 307

. . 1. Wear indicator 2. Location mark Tire wear and damage wear indicators are visible, the tire(s) should be replaced. Tires degrade with age and use. Have tires, over 6 years old checked by a qualified technician because some tire damage may not be obvious. Replace the tires as necessary to prevent tire failure and possible personal injury. For additional information regarding tires, refer to "Important Tire Safety Information" (US) or "Tire Safety Information" (Canada) in the Warranty Information Booklet. NISSAN dealer. They can recommend if an individual tire or a complete set should be replaced. When replacing a tire, use the specified size, speed rating and load carrying capacity as originally equipped. ( "Wheels and tires" page 9-9) NOTICE . When you replace the GT-R tires, it is recommended that you replace all the tires at the same time. The GT-R uses specially designed run-flat tires which feature an extremely rigid side wall. Special techniques and equipment are therefore required when replacing these tires. NISSAN recommends that tire replacement be performed at a GT-R certified NISSAN dealer. When tires are reinstalled after being uninstalled from the wheels, use equipment such as a leverless automatic tire changer. It is only possible to reuse the tires when they have no cracks and/or deformations on the bead portion. However, if you use a lever-type tire . WARNING . . Tires should be periodically inspected for wear, cracking, bulging or objects caught in the tread. If excessive wear, cracks, bulging or deep cuts are found, the tire(s) should be replaced. The original tires have built-in tread wear indicators. When the Replacing wheels and tires When tire replacement is required, replacing tires as a set of four with new tires is recommended. However, if a tire is punctured or damaged, it may be possible to replace only the damaged tire. Determining whether one tire or a complete set of tires should be replaced is based on a number of factors including tire wear and condition. Contact your GT-R certified . 8-40 Maintenance and do-it-yourself