... -33 grader tyres 2.We have 21.00-35,21.00-33,29.5-25,18.00-25,16.00- ... .Tyre has been passed CCC,ISO,GCC,SGS OTR tires 21.00-33 grader tyresOEM accepted & Quickly deliverySuitable to various roadsDeepened ... rubber and Butyl rubber). Specific size as follows: OTR tires 21.00-33 grader tyres