What does 255 45R19 mean?
R19 tires have a diameter of 28. The sidewall of the tire is 4. This means a 255/45R19 tire will make make 718 revolutions per mile, or 447 revolutions per kilometer. The first number in the tire size, 255, represents the width of the tire in millimeters. To convert this to inches, we divide 255 by 25. This gives us approximately 10 inches.Therefore, the tire size 255/40R19 can be expressed in inches as roughly 10 inches wide, 4 inches tall, and designed to fit a 19-inch wheel rim.A 255/45R20 tire has an approximate height, also known as the overall diameter, of 29.This number refers to the section width of the tire, measured in millimeters from sidewall to sidewall; thus, a 255 tire is 10mm wider than a 245 tire. This is the aspect ratio; the sidewall height of the tire as a percentage of its width.We figured out years ago that the optimal aerodynamic relationship between tire and rim is that the rim should be 105% as wide as the tire. If your tire is 25mm wide, you would want to have a rim that is at least 26. This allows the system to keep airflow attached to the wheel as long as possible.
What does 255 45 mean on a tire?
Tire Width): The tire width is 255 millimeters from sidewall to sidewall (just over ten inches). Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches. The height difference depends on the aspect ratio, but a 285 tire is usually about 0.This is the tire’s section width, in millimeters, from sidewall to sidewall. As a result, a 285 tire is wider than a 265 tire. This number is the tire’s aspect ratio, which is the sidewall height as a percentage of the tire’s section width.Tire Width): The tire width is 255 millimeters from sidewall to sidewall (just over ten inches). Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches.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.
What does 225 40 19 mean?
The 225/40R19 93W tire has the following features: the first three digits 225 refer to the width of the tire in millimetres. The second two-digit number 40 refers to the ratio between the height of the sidewall and the width of the tire. R – Tire construction code (Radial). Rim diameter in inches. Load Index, a numerical code associated with the maximum load the tire can carry. T – Speed Rating Symbol.European Metric (No P) 215/45R17 91V 215 – Section Width in millimeters. Aspect Ratio. R – Designates the tire has radial construction. Wheel Diameter. Load Index.The letter R means the tyre is a radial construction. Almost all new car tyres are radials.
What size is 245 45R19 in inches?
Therefore, the tire size 245/45R19 can be expressed in inches as roughly 9. R18 tires have a diameter of 25.Tire Width): The tire width is 255 millimeters from sidewall to sidewall (just over ten inches). Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches.