Tire Size Comparison – The Right Tool to Identifying the Correct Tire Size

If you are looking to change the tire size of your vehicle or are thinking of purchasing a new tire/wheel combination, checking a tire size comparison for your stock wheel as well as your tire size from the new tire and wheel combination is indeed a great idea.

Matching a combined tire and wheel diameter is crucial because it will guarantee that your speedometer readings and ride height do not change drastically. One example for this will be fitting 17 inches wheels to a vehicle which comes with 14 inches as standard. There are 3 primary consequences:

  • The height of the ride will change, letting the vehicle body further from ground
  • The leading speed will slightly increase while the speedometer would under read
  • The vehicle would accelerate slower

The following explains this further.

Ride Height

When you neglect tire pressures as well as the impact of adding wider, larger wheels into the suspension geometry, this is then approximately the level of the vehicle would be from the ground.


A car’s speed reading is normally taken from a transmission and is being set depending on the amount of predefined constants. Once you modify your tire and wheel combination, you’re getting one of those constants and changing it to be variable.


A bigger diameter comes with a greater rotational inertia that needs more energy for acceleration. In simple words, a larger wheel means a slower acceleration.

With the use of tire size comparison, it will be easy for you to determine which size is suitable for your car. With this tool, you can easily calculate the differences between tires including diameter, width and revolutions per mile.