What does 55R mean on a tire?
P225/55R — This letter indicates the construction used in the tire casing. R designates a radial tire, B stands for belted bias, and D stands for diagonal bias construction. P225/55R 19 — This number specifies the wheel diameter. The wheel diameter is the specific size in inches of the wheel that a tire fits. R stands for “Radial” and the last two figures 19 indicate the wheel diameter in inches. The size ends with the load index 101, which is the maximum weight that each wheel can support, and the speed rating H, which is the maximum speed at which the tire is approved for use.The tire’s section height as a percentage of its width. R – Tire construction code (Radial). Rim diameter in inches. Load Index, a numerical code associated with the maximum load the tire can carry.R” stands for the construction method of the tyre indicating the tyre is a radial tyre. The following two numbers (16) indicate the diameter of the wheel rim in inches. The next two or three numbers (94) indicate the load index of the tyre.The 55 is the height of the tire expressed as a percentage of the width we just saw. The lower this number, the shorter and more aggressively the tire sits on the wheel. The R means the tire is of radial construction (they all are) and the 18 is the diameter of wheel the tire fits, expressed in inches.
Which tire is wider, 245 or 265?
The numbers 245 and 265 in tire sizes refer to the tire’s width in millimeters. A 245 tire is 245mm wide, while a 265 tire is 265mm wide, making it 20mm wider. The 245 size is often chosen for better fuel economy, smoother ride, and lower rolling resistance. R19 tire size explanation in this case, the tire’s width is 245 mm (9. The aspect ratio is expressed as a percentage of the tire’s height to its width. A 45-aspect ratio means that the tire’s height is 45% of its width (in this case it is 110.
Which tire is wider, 55 or 60?
A 60 will be 5% of the tire width taller than a 55. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.
How much difference in tire size is acceptable?
Generally, you don’t want to go with tires that have a diameter that is more than 3% different from the factory tires. It’s also a good idea to consult with a trusted mechanic before switching to larger or smaller tires. The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy.It’s highly recommended to use the exact tire size recommended for your car. However, in a pinch the tire width and aspect ratio can be changed slightly and still fit on your rim. Although this will still work, keep in mind it may have adverse effects on the performance of your car.