In mathematics, a fraction is a number that represents a part of a whole. It consists of a numerator and a denominator. The numerator represents the number of equal parts of a whole, while the denominator is the total number of parts that make up said whole. For example, in the fraction of 3

The Aspect Ratio is the tire section height divided by the section width (not tread width), multiplied by 100. The section height is measured at the center of the tire crown. The tread width is usually greater than the section width. The section width is measured from the middle side walls (above the bead, below the tread). It is Fraction subtraction is essentially the same as fraction addition. A common denominator is required for the operation to occur. Refer to the addition section as well as the equations below for clarification. a The Ply Rating is a descriptive abbreviation. It refers to the number of plys (layers) that make up the tire. For more on descriptive abbreviations, see sections below. For specific strength of the different ply tires, refer the tire manufacturers literature. Starting with the ones digit of the bottom number, the multiplier, multiply it by the last digit in the top number Proper fraction button is used to change a number of the form of 9/5 to the form of 1 4/5. A proper fraction is a fraction where the numerator (top number) is less than the denominator (bottom number).An alternative method for finding a common denominator is to determine the least common multiple (LCM) for the denominators, then add or subtract the numerators as one would an integer. Using the least common multiple can be more efficient and is more likely to result in a fraction in simplified form. In the example above, the denominators were 4, 6, and 2. The least common multiple is the first shared multiple of these three numbers. Multiples of 2: 2, 4, 6, 8 10, 12 Sometimes a catalog will list a tire as TL, BL or RWL. These have nothing to do with the size or handling. They are strictly descriptive. They describe the look or another feature of the tire. Abbreviation TL is a descriptive abbreviation. {See the sections below for more info.} It indicates that the tire is meant for a tubeless application. The majority of modern motorcycles use tubeless tires. If your bike has wire spoke wheels you need to use a tire designed for use with a tube inside. All those spokes and nipples are not air tight. In addition to the information listed above, tires can contain Load Index or Rating info on the sidewall. This refers to how much weight a tire can safely transport. It includes the weight of the bike and rider(s). Not all tire manufacturers make tires in all load indices. Dunlop, for example, starts at 33. Load

multiplied by 100 to give you a whole number for the tire. So instead of .9 the tire is stamped 90.In engineering, fractions are widely used to describe the size of components such as pipes and bolts. The most common fractional and decimal equivalents are listed below. 64 th the numerator is 3, and the denominator is 8. A more illustrative example could involve a pie with 8 slices. 1 of those 8 slices would constitute the numerator of a fraction, while the total of 8 slices that comprises the whole pie would be the denominator. If a person were to eat 3 slices, the remaining fraction of the pie would therefore be 5

the decimal would then be 0.05, and so on. Beyond this, converting fractions into decimals requires the operation of long division.

What do these terms alphabetical, metric and std inch mean? They are explained in a section below. The sizes in the above chart do not go as large as modern sizes (180/55 or 240/40) because new bikes are not made to use the Inch Format. Unlike adding and subtracting integers such as 2 and 8, fractions require a common denominator to undergo these operations. One method for finding a common denominator involves multiplying the numerators and denominators of all of the fractions involved by the product of the denominators of each fraction. Multiplying all of the denominators ensures that the new denominator is certain to be a multiple of each individual denominator. The numerators also need to be multiplied by the appropriate factors to preserve the value of the fraction as a whole. This is arguably the simplest way to ensure that the fractions have a common denominator. However, in most cases, the solutions to these equations will not appear in simplified form (the provided calculator computes the simplification automatically). Below is an example using this method. a

This process can be used for any number of fractions. Just multiply the numerators and denominators of each fraction in the problem by the product of the denominators of all the other fractions (not including its own respective denominator) in the problem. EX:The section width and rim size are defined in the same manner as described for the Alpha and Metric size formats. The Speed Rating is explained in detail here. For our example a speed rating of Z means this tire is rated for speeds exceeding 149mph.