Azenis RT-615 is a street-legal motorsports performance and track tyre. It is a championship-winning street tyre that is extremely popular for todayâ€™s sports cars, performance compacts and sedans. With its world-spec construction and advanced compound for street and track use, the RT615 confidently maintains grip both in street and track conditions. Through its proprietary technology, the motorsports inspired 8/32nd tread design and solid centre rib provide significant traction and sustains strong grip in dry conditions. Understanding the tremendous demands the AZENIS RT-615 will experience, new proprietary casing design, bead apex and turn-up technology allow for the elimination of heavy steel construction, resulting in 8% reduction in unsprung tyre weight. Key Features and Benefits: Massive Sport Side Shoulder Blocks deliver motorsports level grip and unsurpassed durability. Varible Shoulder Depth Design helps reduce tread block squirm and promote long lasting wear uniformity. Solid Centre Rib significantly reduces wheel spin by reducing contact patch void ratio under heavy acceleration. High Tension Carcass increases handling response and high speed stability. Steel Belts offer greater tread rigidity, superior grip and high speed stability. Joint-less Nylon Cap Ply increases durability at high speeds and promotes long lasting even wear.