CENTER GROOVE Two rib grooves ensures effective water dispersion. Tested data from Grooves make sure of the tyres. WING GROOVE The hollow rib grooves at outside wall with different length and angle. Rib grooves extending to sidewall ensures effective water dispersion. Short grooves ensure tenacity. LIGHTNING GROOVE Lightning Groove can not only insure broadwise tenacity, but also show special of pattern. SIDE DIMPLE Side simple is the standard of friction index.