|Inch size is the most widely used measurement in ATV tires.
In the size 25×8.00-12, the meaning of the numbers is as follows:
• 25 - The overall height of the tire when mounted and inflated.
• 8.00 - The overall width of the tire when mounted and inflated.
• 12 - The diameter of the wheel this tire will mount to.
Please see the chart below for a more detailed explanation of the varying sizes
Click to enlarge: