Miata Tire Calculator

Tire Width (mm):

Aspect Ratio (%):

Wheel Diameter (inches):


Calculate

Tire Diameter (in inches):

 

 

 

About Miata Tire Calculator (Formula)

The Miata Tire Calculator utilizes the formula for calculating the tire diameter based on the tire width, aspect ratio, and wheel diameter. The formula used is:

Tire Diameter=2×(Tire Width×Aspect Ratio100)+Wheel DiameterTire Diameter=2×(Tire Width×100Aspect Ratio​)+Wheel Diameter

Where:

• $\text{Tire Diameter}$ is the overall diameter of the tire.
• $\text{Tire Width}$ is the width of the tire in millimeters.
• $\text{Aspect Ratio}$ is the percentage ratio of the tire’s sidewall height to its width.
• $\text{Wheel Diameter}$ is the diameter of the wheel in inches.

This formula takes into account the tire’s width, aspect ratio, and the diameter of the wheel to calculate the overall diameter of the tire. The aspect ratio is expressed as a percentage and represents the height of the tire’s sidewall relative to its width.

The Miata Tire Calculator allows users to input values for tire width, aspect ratio, and wheel diameter, and it provides the calculated tire diameter as output, aiding Miata enthusiasts in choosing appropriate tire configurations for their vehicles.