ATV Tire, Wheel and Bolt Pattern Chart To understand your tires you first have to know what size is your OEM tires are. You can find this out by referring to your owners manual or the application chart below. You can also just read the numbers on the side of your tires and do the math. What do the numbers mean? Tire Example: Dunlop 25 x 10 x 12 Tire Diameter = 25" Tire Width = 10" Rim Diameter = 12" Wheel Example: Steel Wheel 10 x 8 3+5 4/110 Wheel Diameter = 10" Wheel Width = 8" Wheel Offset = 3" mounting centerline to inside wheel edge and 5" mounting center line to the outside wheel edge Number of Bolt Holes = 4 Spacing of bolt holes = 110" (measured from center of one bolt hole across center of wheel to opposite bolt hole) Note: Most OEM Wheel Applications have no offset (the wheel is centered over the hub). In these cases, the wheel offset is omitted from the listing. How to determine bolt patterns? You can determine your bolt pattern by measuring "in millimeters" the distance from the center of one wheel stud to the center of the opposite wheel stud. Next, determine your correct bolt pattern. Convert your measurement from inches to millimeters by multiplying by "25.4" Example: Wheel stud measurement: 4-5/16" = (4.313") Formula: 4.313 x 25.4 = 109.6 mm ==> 110mm bolt pattern ARCTIC CAT ATV TIRE, WHEEL AND BOLT PATTERN