The diameter of a tire is the distance from one end to the other, and it is recorded in inches. Heavy-duty tires are typically larger than passenger car tires.
The widths vary from 8-22 inches, depending on the vehicle you want to install them on. The width depends on whether the tire is for a car, SUV, or truck and its size. To calculate the width of a tire, you have to measure the distance from one side of the outer edge to the other.
The typical size is recorded in millimeters, and it is written on the sidewall. The width of a tire is usually recorded in inches, and you can get this information on the tire’s sidewall. Therefore, you must know the type of vehicle you are driving and measure the wheelbase and track to determine the appropriate variety of tires you should be riding. A tire’s aspect ratio is crucial because different vehicles have specific aspect ratio requirements that will make the tire fit. The series determine the tire width ratio, so a ratio of 70 will be identified as 70 series.Īspect ratios are either square or round and impact surface area on an object. Current market standards have wider tires with aspect ratios of 60, 70, or 80, which are very common. In the past, tire manufacturers produced 100 types of tires with the same height and width. The aspect ratio is calculated when the tire is filled with the appropriate air pressure, mounted on the required measuring rim, and has no load.Ĭalculating aspect ratio: Height of the tire (H) / Width of the tire (W) X 100 = Aspect Ratio (%) For example, P225/50R17, where 50 is the aspect ratio given in percentages, and it is calculated by dividing the sidewall height by the tire width.Ī tire with a 50 aspect ratio means that the tires profile is 50% the size of the tires width. It can be seen on the tire’s sidewall after the slash mark on the number. What is Tire Aspect Ratio?Ī tire aspect ratio is a number that denotes how high your tire profile is, i.e.
Keep reading to find out how to read your tire profile and adjust when necessary. Below is a complete guide to tire aspect ratios with more details to help you understand how your tires work.
These numbers are precisely calculated to point out the tire size and how it will fit your car. If you want to change your tires for a sporty look or performance, start by checking the aspect ratio and diameter with the help of a professional.
Luckily, the owner’s manual has the size recommendations for the tires you should use on your car. Speaking of tire sizes, the numbers on the sidewalls can be very confusing because some are written in inches and others in millimeters. There are various components that determine tire sizes, and if you pay attention to them, you will pick something that works for your car. For your tires to perform the best, you need to ensure that they are the correct size for your vehicle. If you make a purchase through links from this website, we may get a small share of the sale from Amazon and other similar affiliate programs.Ĭar tires do an excellent job of keeping a vehicle on the road in different conditions. As an Amazon Associate we earn from qualifying purchases made on our website.