Hoosier MX Dirt Bike Tire 110/100-18 IMX25 is optimal as a rear tire for lower horsepower 125cc and 250cc Off Road bikes in GNCC. The 110/100-18 has an intermediate tread pattern, the IMX25 compound has the best overall performance in all conditions along with some longevity. Most used compound among Pro riders. This tire will increase cornering speed and braking, also the comfort of the tire will give the rider confidence to decrease lap times. Optimal air pressure range is 13-14 psi.