Maximize your scooter's performance with the Solid Inner Tire, exclusively designed for i9 and i9pro models. Offering unparalleled durability, it eliminates concerns of flats, ensuring smoother rides and prolonged scooter health. Elevate your journey's reliability and comfort every time. The tire is suitable for electric scooter i9/i9pro with pneumatic tires. Outer tire size: 8.5 inches.