2013 Nissan GT-R Owner's Manual - Page 304

6. Term of "tubeless" or "tube type" TYPES OF TIRES Summer tires The GT-R summer tires are made from a specially formulated rubber to maximize the vehicle's performance capabilities. Performance of summer tires is substantially reduced when temperatures are less than 328F (08C) so you must drive carefully. NISSAN recommends the use of winter or all-season tires on all four wheels if you plan to operate your vehicle in snowy or icy conditions when temperatures are less than 328F (08C). Indicates whether the tire requires an inner tube ("tube type") or not ("tubeless"). 7. The word "radial" The word "radial" is shown, if the tire has radial structure. 8. Manufacturer or brand name Manufacturer or brand name is shown. Other tire-related terminology: In addition to the many terms that are defined throughout this section, Intended Outboard Sidewall is (1) the sidewall that contains a whitewall, bears white lettering or bears manufacturer, brand and/or model name molding that is higher or deeper than the same molding on the other sidewall of the tire, or (2) the outward facing sidewall of an asymmetrical tire that has a particular side that must always face outward when mounted on a vehicle. WARNING . When changing or replacing tires, be sure all four tires are of the same type (Examples: Summer or All Season) and construction. A GT-R certified NISSAN dealer may be able to help you with information about tire type, size, speed rating and availability. Replacing tires with those not originally specified by NISSAN could affect the proper operation of the TPMS. For additional information regarding tires, refer to "Important Tire Safety Information" (US) or "Tire Safety Information" (Canada) in the Warranty Information Booklet. . WARNING Never use summer tires when the temperature is below −48F (−208C) to prevent permanent tread deformation which may cause tire damage or tire failure. This may cause a loss of vehicle control which can result in serious personal injury or death. . All-season tires NISSAN specifies all-season tires on some models to provide good performance for use all year around, including snowy and icy road conditions. All-season tires are identified by ALL SEASON on the tire sidewall. Run-flat tires Your vehicle is equipped with run-flat tires. You can continue driving to a safe location even if they are punctured. Always use run-flat tires of the specified size on all four wheels. Mixing tire sizes or construction may reduce vehicle handMaintenance and do-it-yourself 8-37