... factory 2,self-cleaning action 3,have quality assured 4,OEM accept 18.4-30 tractor tire1,Good traction and control performance 2 ... .6-24,14.9-24,15.5-38,16.9-28,16.9-34,18.4-30,18.4-34,20.8-38,23.1 ... -15-4/8PRF-2 5.50-16,5.00-15,4.00-16,4.00-15,4.00-14,4.00-12,7.50-20,7.50-18 ... /75-18,12.5/80-18,10.0/80-12,13.0/65-18,400/60-15.5,500/60-22.5,550/60-22.5 18.4-30 ...