View Here : Tire Number Meaning
Tire Width. Is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters.
but it's written in code. The tire size is just one small piece of this code. The tire size "P225/45R17 91V" may not mean much to the average person, but to tire geeks like us it speaks volumes. Read on to learn how to crack the tire code with this handy guide dedicated to tire types, sizes, and construction.
…find the tire identification numbers? What do they mean? Refer to this drawing to see the various markings on a tire's sidewall. The tire identification number is shown middle left in the illustration and is essentially the tire's serial number. It is required when registering tires with…
Flotation sizes. If a tire size has three sets of numbers (15x6.00-6, 26x12.00-12, 31x15.50-15), then the first number ( 26 x12.00-12) is the approximate height in inches, the second number (26x 12.00 -12) is the approximate width in inches, and the third number (26x12.00- 12) is the rim diameter in inches.
How Tires Work. Tire Width The 235 is the width of the tire in millimeters (mm), measured from sidewall to sidewall. Since this measure is affected by the width of the rim, the measurement is for the tire when it is on its intended rim size. Aspect Ratio This number tells you the height of the tire, from the bead to the top of the tread.
225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters. This measurement varies depending on the rim to which it is fitted. (There are 25.4 millimeters per 1 inch.) 50 is the two-figure aspect ratio.
Aspect Ratio. Aspect ratio/tire profile/series is the relation of the tire’s width and height in percent. So, 55 profile is 55% of the width, meaning the tire’s height is (taking the width of 205 mm) 112.75 mm or 4.4”. You may see tires without these tire numbers, meaning the tire’s profile is standard – 82%.
Finding the tire size meaning in metric measurements is a little more difficult and usually take a calculator to get exactly right. Example B : 305/70R17 On metric tires the first number is your width of the tire in millimeters.
Enter the second number on your tire's sidewall as highlighted below. Enter the second number on your tire's sidewall as highlighted below. Heads up: Some tires might show a number like 12.5 as 1250.
(65) Aspect Ratio. This number is the tire's aspect ratio, or its section height compared to its section width. In this example, the section (or sidewall) height is 65 percent of the section width. This number can be indicative of a tire's purpose.