tire size calculator
Tire Size Calculator is the basic need to calculate the size of tires as Tires are an essential component to any vehicle whose size is usually denoted by a combination of numbers and letters which can often be confusing for those unfamiliar with the terminology. It is important for the “driver” to understand the “size” and “measurement” of a tire when choosing one and to simplify this process, a tire size conversion chart can be extremely helpful.
Tire Size Conversion Chart
| Tire Diameter | ||
| Tread Width | ||
| Rim Diameter | ||
| Sidewall Height | ||
| Circumference | ||
| Revolutions |
Formula to calculate overall tire diameter – Tire Size Calculator
Overall Diameter (inches) = Rim Diameter + 2 * (Tire Width * Aspect Ratio / 100)
In tire size calculator, the overall diameter is considered an important factor as it affects the speedometer reading, gearing, and overall performance of your vehicle. So you can use this formula to calculate a tire’s overall diameter based on its width, aspect ratio, and rim diameter.
For example:
If you have a tire with the following specifications:
Tire Width: 215mm
Aspect Ratio: 60%
Rim Diameter: 16 InchUsing the formula:
Overall diameter = 16 + 2 * (215 * 60/100) = 16 + 2 * 129 = 16 + 258 = 274 inches
This will be the overall diameter of the tire.
Note: Click on Calculator Tire Size, Tire Size Calculator Online for more details.
What are the two main measurement systems for tire sizes?
Tire sizes come in two main measurement systems, “Metric and Imperial” which helps in providing a clear comparison between the two and it also allow users to convert tire sizes between the two systems due to which Finding the right tire for your “specific vehicle” becomes easy.
Metric Tire Size System
The metric tire system consists of a series of numbers that denote the tire’s width, aspect ratio, and rim diameter. The width is measured in millimeters and represents the distance from sidewall to sidewall when the tire is fitted to a specified rim width.
Note: It is used to describe tire dimensions in countries that primarily use the Imperial or US traditional measurement systems.
Imperial Tire Sizing System
It is also known as the “inch-based tire sizing system“. It uses a combination of numbers and letters to denote the tire’s width, aspect ratio, construction type, and rim diameter. The width is measured in inches and represents the distance from sidewall to sidewall when the tire is fitted to a specified rim width.
Note: This is a standardized method used to describe the dimensions of tires, mainly used in countries that have adopted the metric system of measurement.
Drivers can go by the above information and can use the “Tire Size Calculator“ to ensure proper fitment of their vehicle as well as maintain overall performance and safety.
How to read tire size?
To use the tire size calculator for the conversion of various tire sizes, one must have the knowledge about how to read and understand the tire size as it is important for the driver or the vehicle owner when choosing the best fit for their vehicle. Here we are taking an example of a tire size: 215/60R16. Let’s go over the components involved in tire size and how tires are measured.
This example contains four components – Section width, Aspect ratio, Radial construction, and Rim diameter. Let’s know about all the components in detail.
Section Width
The section width is the first number (215) of the tire that represents the width in millimeters and is the “distance between” the tire’s “outer sidewall” and “inner sidewall” when measured at its widest point.
Aspect Ratio
The aspect ratio is a percentage that represents the ratio of the height of a tire’s sidewall to its width. In our example, this is the second number (60), which is the ratio of the height of the tire to its width, and the height of the tire is 60% of its width.
Radial Construction
The “R” indicates that the tire has “radial construction“, which is the most common type of “tire construction” in use today.
Rim diameter
The Rim diameter is expressed in inches and specifies the diameter of the wheel the tire is designed to fit on. In our example, this is the last number (16) of a tire, indicating the “diameter of the wheel” or “rim” in inches. It is designed for mounting the tire.
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