1.The grooves are distributed in petal shape, which allows multiple grooves to work at the same time, improving the heat dissipation efficiency greatly.
2.The grooves are designed with an aerodynamic arc, which is conducive to the rapid flow of air and further boosts the heat dissipation function.
3.The grooves are symmetrical design, no matter it is on the left or right wheel, whether driving forward or reversing, the purpose of heat dissipation can be normally and effectively achieved.
4.The grooves applied sealed design, not passing through the center hole, meaning it is capable to prevent rainwater or debris from entering the axle-spacer-wheel connection.
5.Each edge of the grooves is carved with funnel-shaped notches, acting as air collectors which tremendously enlarges the airflow, enhancing the heat dissipation effect.