Miata Tire CalculatorTire Calculator


Miata tire calculator Calculate speedometer reading after you change the size of your tires.

Original tire size: / R  
New tire size: / R
  Original tyre New tyre
185/65 R14 205/50 R15
Radius, mm    
Circumference, mm    
Circumference difference, mm  
Circumference difference, %  
Vehicle speed as speedometer reading is:*  
50 km/h 50  
80 km/h 80  
100 km/h 100  
120 km/h 120  
* Note: it is assumed that speedometer shows real speed with original tires.

Find more about Miata tire size calculator.

Miata tire calculator

Miata tire calculator is very essential to calculate the specifications of the tires and the user to know about the speedometer and odometer readings of the particular tire and at what miles the tire should be changed. The vehicles’ tires can be changed in the size if the tires match in the specifications of the … Continue reading

Miata tire size calculator

Miata tire size calculator is used to calculate the value of the tire that is eligible to be replaced with the existing tire of the Miata. The main requirement for this purpose is the value of the tires. The value of the tire is found in the inner walls of the tires. This value should … Continue reading