The Blizzak LM-25 RFT (Run-Flat) is Bridgestone's Performance Winter / Snow tire designed to provide temporary self-supporting run-flat continuing mobility in the case of complete air loss due to a puncture during winter driving exclusively for the drivers of BMW Z4 roadsters, 1-, 3-. 5-, 6-, 7-Series sedans and Nissan GT-R supercars. Blizzak LM-25 RFT Performance Winter tires allow drivers to maintain their vehicle's sporty appearance and mobility while providing winter driving traction on dry, wet and snow-covered roads.Vehicle ApplicationTire SizeBMW Z4, 1- & 3-Series205/55R16 91HBMW 1- & 3-Series205/50R17 89HBMW Z4, 1- & 3-Series225/45R17 94VBMW 5- & 7-Series245/50R17 99HBMW 6-Series245/45R18 96VNissan GT-R255/40R20 97V (Front)285/35R20 100V (Rear)Blizzak LM-25 RFT winter tires feature a directional tread design to enhance hydroplaning resistance on wet and slush-covered roads with rounded tread shoulders to enhance dry and wet road handling. Their tread compound has a high silica content instead of the Multicell tread compounds used on other Blizzak winter tires. This allows Blizzak LM-25 RFT tires to combine winter traction with H-and V-speed rated durability. The Blizzak LM-25 RFT tires feature an independent block tread design which employs the Lamellen "edge effect" (multiple biting edges in the tread blocks to help grip snow and ice) to enhance winter traction without resorting to traditional metal studs.The Blizzak LM-25 RFT winter tire's overall combination of capabilities is made possible by Bridgestone's UNI-T technology that brings advanced tire technologies together, taking performance to a new level. Innovative tire design, construction and tread compound help maximize the tire's performance, ride quality and wear while providing traction in winter.Blizzak LM-25 RFT winter tires meet the industry's severe snow service requirements and are branded with the three-peak mountain snowflake (3PMSF) symbol.Note: Snow platform indicators (the equivalent of snow wear bars) are molded into the Blizzak LM-25 RFT's tread grooves to inform the driver when ice and snow traction will be reduced as the tire's tread wear reaches the point where the remaining tread depth becomes less effective in deep snow.Install Bridgestone Blizzak LM-25 RFT tires in sets of four only.Due to the traction capabilities of the Blizzak LM-25 RFT, Bridgestone recommends using Blizzak LM-25 RFT tires only in sets of four to provide the best handling characteristics and tire performance. Related Information: What is the three-peak mountain snowflake symbol (3PMSF)?