Why divide the diameter change by two?
The axle sits at the center of the tire. Only the radius change lifts or lowers the chassis.
ATV Calculator
ATV Ground Clearance Calculator
See how much belly clearance you gain or lose when you change ATV tire diameter, starting from your current clearance.
Results
Values update after you calculate. Empty or invalid inputs will not invent a number.
Enter the values and choose Calculate to see estimates.
How it works
Clearance change is half the difference between the new tire diameter and the stock tire diameter, then added to the current clearance.
New clearance = current clearance + (new tire diameter − stock tire diameter) ÷ 2.
These results are estimates for planning only. They are not OEM specifications, safety certifications, or professional mechanical, legal, or financial advice.
Ground Clearance Calculator FAQs
Do lift kits add to this number?
A lift changes ride height separately. Use the lift height calculator if you are combining both.
Will CV joints or steering still clear?
This only estimates skid-plate height. Check axles, A-arms, and steering stops after any diameter change.
Related ATV calculators
Tire Size Calculator
Compare stock and new ATV tire diameter, circumference, and the effect on speedometer readings.
Lift Height Calculator
Estimate ATV ride-height change from a lift kit and optional tire-diameter change.
Suspension Sag Calculator
Calculate ATV static sag and rider sag as a percentage of suspension travel.
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