Wheel Specifications

Wheel Cross Section

Backspace (or Rear Spacing): The distance from the extreme back edge of the rim to the mounting surface.

Offset: The distance from the centerline of the wheel to the face of the mounting surface of the wheel.

Pitch Center Diameter: Bolt Pattern

X Factor: Caliper Clearance

Offset Conversion Chart

MM OFFSET TO BACKSPACE IN INCHES

BACKSPACE 3.25" 3.5" 3.75" 4" 4.25" 4.5" 4.75" 5" 5.25" 5.5" 5.75" 6" 6.25" 6.5" 6.75" 7" 7.25" 7.5" 7.75" 8" 8.25" 8.5" 8.75" 9" 9.25" 9.5"
Wheel Width  
5" 6 12 19 25 32 38 44 51 57 63 69 76                            
5.5" 0 6 12 19 25 32 38 44 51 57 63 69 76                          
6" -6 0 6 12 19 25 32 38 44 51 57 63 69 76                        
6.5" -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76                      
7" -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76                    
7.5" -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76                  
8" -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76                
8.5" -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76              
9" -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76            
9.5" -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76          
10" -57 -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76        
10.5" -63 -57 -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76      
11" -69 -63 -57 -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76    
11.5" -75 -69 -63 -57 -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76  
12" -81 -75 -69 -63 -57 -51 -44 -38 -32 -25 -19 -12 -6 0 6 12 19 25 32 38 44 51 57 63 69 76