◇.REASONABLE DESIGN OF PATTERN DISTRIBUTION, INCREASE THE RIGIDITY OF TIRE SHOULDER AND IMPROVE THE WEAR RESISTANCE ◇.WAVY GROOVE DESIGN OF SHOULDER PATTERN TO RESTRAIN CLIPPING ◇.THE OPTIMIZED DESIGN OF THE TIRE STRUCTURE MAKES THE TIRE STRESS DISTRIBUTION MORE REASONABLE AND MORE SUITABLE FOR TRAILER WHEEL ◇.ULTRA DEEP PATTERN DESIGN GIVE THE TIRE LONG WEAR LIFE