Is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters.
In example "A" this reads 12.50, meaning the tire width is 12 and 1/2 inches. The final number simply is the wheel size or "diameter" of the wheel that the tire will fit on. How to read tire size with a metric measurement is a little more difficult and usually takes a calculator to get exactly right.
"The tire size branded on the sidewall provides a significant amount of information about the tire's intended purpose, dimensions, load capacity and high temperature/high speed durability." Service Type. Most tire sizes begin with a letter or letters that identify the type of vehicle and/or type of service for which they were designed.
The tire size "P225/45R17 91V" may not mean much to the average person, but to tire geeks like us it speaks volumes. Read on to learn how to crack the tire code with this handy guide dedicated to tire types, sizes, and construction.
A tire's dimensions can be determined by reading the markings on the sidewall. An example tire size is 245/45R18, which tells us the width, sidewall height, internal construction and matching wheel diameter.
A tire's load index is a measurement of how much weight each tire is designed to support. The larger the number, the higher the load capacity. This is one of the most important numbers on your tire.
The first number to appear in your tire size information is the width, in millimeters, of the correct tires for your vehicle: P225/70R16 91S. Tire width always refers to the measurement from one sidewall to another.
If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire. 225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters.
It’s important to match the tires you’re buying with your car’s rim size. When you go into the tire store, the tire salesperson will ask what your rim size is. So be prepared to give this number when buying new tires. Reading the Letters on Your Tires. R – Radial construction. The tire tread is designed to give it added strength.
Use our tire size calculator to calculate the diameter, width, sidewall, circumference, and revolutions per mile of any tire. Just type in a metric or standard size tire and click calculate. Inch measurement tires are fairly easy to understand however metric tires use a more difficult system to read.
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The tire size branded on the sidewall provides a significant amount of information about the tire’s intended purpose, dimensions, load capacity and high temperature high speed durability. Our primary example will be based on variations of the 225 50R16 size, although other sizes will appear .
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