20. HIGH-SPEED TIRE HIGH-SPEED TIRE CON- STRUCTION & FEATURES Tread CONSTRUCTION INNER LINER Inner Tube A layer of rubber (inner liner) which replaces the inner tube is stuck to the inside wall of the high-speed tire. The inner liner is made of thick rubber, a material that high-pressure air can not pass through. The liner can not be Circle Boundary Tire Shoulder lengthened like other inner tubes, so when nails are inserted into the tire, breaks will not be enlarged because Tire Flange the nails are suppressed to avoid air leaks. When tire break occurs, the inserted nails will spring out to make Tube Valve the tire run under low pressure. It is Tire Bead very dangerous because the tire temperature will raise highly to make Tube Tire tire wobble during riding. Therefore, riders must be very careful to check tire pressure and inserted nails before riding at high-speed. ·Tire pressure ·Tire deformation and damage Tread ·Tire groove depth and abnormal wear Inner Liner Tire Depth: Front : 0.8mm Rear : 0.8mm ·Imbedded metals, stones, or other Circle Boundary Tire Shoulder foreign matters Tire Flange The bead base where tire and rim contact is wrapped by rubber fabrics called tire bead in order to reinforce Tire Valve Tire Bead its function. The fabrics is specially adopted for the high-speed tire to keep its air density because air can not pass through this material. Also, the fabrics can keep the tire from Tubeless Tire damage when the tire falls off, and protect tire from damage due to friction of wheel rim while riding. 20-1