Tire Size Conversion Chart

In the world of tires, understanding tire size conversion is an essential skill for both motorists and automotive technicians. Tire size conversion deals with interpreting the different sizing systems used across various regions and manufacturers. This skill can prove critical when selecting replacement tires, understanding vehicle compatibility, or looking to upgrade your tire for enhanced performance or aesthetic appeal.

Tire sizes come in two main measurement systems: metric and imperial. The metric system is more commonly used worldwide, especially by manufacturers. It involves a series of numbers and letters that represent the tire's specifications, such as width, aspect ratio, and diameter. The imperial system, on the other hand, measures tire sizes in inches, commonly used in off-road and classic car communities.

While the conversion between tire sizing systems is not always exact due to different methods of measurement and rounding errors, the above guide provides a helpful estimation method. Understanding tire size conversion is crucial, as it empowers motorists and technicians to make informed decisions about tire replacement or upgrades, ensuring safety and enhancing vehicle performance. As a vehicle owner, this knowledge will provide you the tools to better understand and care for your vehicle's tires.

Tire sizes with metric specs can be one of the following: Metric (215/65R16), P-Metric (P215/50R15), LT-Metric (LT285/75R18), Special Trailer (ST235/60R15), Temporary Spare (T135/80R14) and High-Load (HL265/35R21). Select the tire size you want to convert to inches to see its detailed specs and visualization.

You can also use our tire conversion calculator for easy metric tire conversion to inches.

All listed guides, data and/or calculations are for informational purposes only. TireConverter.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information.