The formula to calculate the Tire Rollout is:
Rollout=π⋅Tire DiameterGear Ratio
Where:
Let's say the tire diameter is 30 inches and the gear ratio is 3.5. Using the formula:
Rollout=π⋅303.5
We get:
Rollout≈26.98 inches
So, the tire rollout is approximately 26.98 inches.