Tire Size Conversion Chart

33" Tires (+/- 0.50" in overall diameter)
15" 16" 17" 18" 20" 22"  
33X950-15 285/75-16 275/70-17 275/65-18 285/60-20 285/50-22  
33X10.50-15 305/70-16 255/75-17 275/70-18 295/55-20 33X12.50-22  
33X11.50-15 375/55-16 285/70-17 305/60-18 305/55-20 305/45-22  
33X12.50-15M   305/65-17 295/65-18 325/50-20    
33X13.50-15   33X12.50-17 33X12.50-18      
33X15.50-15     325/60-18      
      375/50-18      
 
35" Tires (+/- 0.50" in overall diameter)
15" 16" 17" 18" 20" 22" 24"
35X12.50-15 315/75-16 315/70-17 285/75-18 275/65-20 35X12.50-22 325/45-24
    295/70-17 295/70-18 285/65-20 325/50-22  
      35X12.50-18 295/65-20    
      305/70-18 315/60-20    
      325/65-18 325/60-20    
        35X11.50-20    
        35X12.50-20    
        35X13.50-20    
             
37" Tires (+/- 0.50" in overall diameter)
15" 16" 17" 18" 20" 22" 24"
37X14.50-17 385/70-16 37X12.50-17 37X11.50-18 37X12.50-20 37X12.50-22 315/50-24
      37X12.50-18   37X13.50-22 37X13.50-24
      37X13.50-18      
             
40" Tires (+/- 0.50" in Overall Diameter)
    17" 20"   22" 24"
    40X13.50-17 40X15.50-20   40X15.50-22 40X15.50-24

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