What does 255 55R19 mean?
R19 tires have a diameter of 30 (763 mm), a tread width of 10 (255 mm), and a wheel diameter of 19 (482. The sidewall of the tire is 5. This means a 255/55R19 tire will make make 673 revolutions per mile, or 417 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.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.Therefore, the tire size 255/60R19 can be expressed in inches as roughly 10 inches wide, 6 inches tall, and designed to fit a 19-inch wheel rim.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.R19 tires have a diameter of 30 (763 mm), a tread width of 10 (255 mm), and a wheel diameter of 19 (482. The sidewall of the tire is 5. This means a 255/55R19 tire will make make 673 revolutions per mile, or 417 revolutions per kilometer.
Does the R matter in tire size?
The middle letter on the right side of the slash tells you about the tire’s construction method and will most commonly be R, or radial. This means the layers of the tire run radially across it. The last number is important, as it tells you what size wheel the tire fits. Aspect ratio. 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.R19 Tyres Number 275 in the first position is the exact tyre’s tread width in millimetres. The next number is the tyre’s profile height (55% out of 275 millimetres of the tyre’s tread width). The R means that the tyre has been produced in the radial technology.R” stands for the construction method of the tire indicating the tire is a radial tire. The following two numbers (16) indicate the diameter of the wheel rim in inches.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.The “P” means it’s a passenger car tire (as opposed to a light truck tire, which would have “LT”), the 205 is the tread width in millimetres. The 55 is the aspect ratio – it sticks up above the rim by 55% of the tread width. The “R” means it’s of radial construction, and the “15” means it fits a 15 inch diameter rim.
What does R mean on tyres?
The letter R means the tyre is a radial construction. Almost all new car tyres are radials. R stands for “Radial” and the last two figures 18 indicate the wheel diameter in inches. The size ends with the load index 98, 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.
What does R mean on a tire?
R” stands for the construction method of the tire indicating the tire is a radial tire. The following two numbers (16) indicate the diameter of the wheel rim in inches. Tire width in millimeters. Aspect ratio. The tire’s section height as a percentage of its width. R – Tire construction code (Radial). Rim diameter in inches.
What does 225 55R19 mean on a tire?
Tires for your tire size 225/55R19 The second two-digit number 55 refers to the ratio between the height of the sidewall and the width of the tire. R stands for “Radial” and the last two figures 19 indicate the wheel diameter in inches. All tyres have a size marked on the sidewall, for example, 205/55 R16, the number 55 is the aspect ratio and indicates the height is 55 percent of the width of the tyre. Tyres that have an aspect ratio of 50 or less would be classed as low profile tyres.