The first of the two numbers is the nominal section width of the tyre. It is given in millimetres and defines the distance between the inner and outer sidewall of the tyre. For example, 205 means that your tyre is nominally 205 mm wide. The second number is the relationship between a tyre’s sidewall height and the tyre's width.
Check your owner’s manual. Check the size of your current tires. Look for the size on the driver’s side door jamb or inside the glove box door. You’ll find a series of numbers and symbols similar to P215/60 R17 S. These are the most important figures to pay attention to.
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R45 1 size (s) R46 10 size (s) R49 2 size (s) R50 5 size (s) R51 4 size (s) R54 3 size (s) R57 6 size (s) R63 2 size (s) Find the best tire to keep your business moving with our all tire sizes page from Michelin..
After determining it's time for new tires, the next step is determining what size tire you need to fit your wheel. While Menard's Mobile Tire makes it easy by just entering your vehicle information into our shopping tool
The size of a tyre also contains other important information that defines its type of construction and the limits of its capabilities. Let's take a concrete example with the MICHELIN Road 6: As you can see, the sidewall of the tyre shows the following dimensions:
At some point on a tyre sidewall, usually on a lower edge, there will be a number comprising four digits. The first two numbers state the week of the year in which the tyre was made and the second two give the year. So ‘3620’ means the 36 th week of the year 2020. The age of a tyre matters, even if it is new. Tire size numbers explained. Use the guide below as a tire size decoder and watch our tire decoder video to learn more. 215: The width of the tire in millimeters. 50: The height of the sidewall as a percentage of the tire width (50 percent of 215 mm) R: Radial (a common type of modern tire) 17: The wheel diameter in inches — in this example Let's take a concrete example with the MICHELIN Road 6: As you can see, the sidewall of the tire shows the following dimensions: 180/55 ZR 17 then: M/C (73W) Here is what these codes mean: 180 : The width of the tire, expressed in millimetres. 55 : The aspect ratio (the sidewall height as a proportion of the tire width). Check the tire’s sidewall for a series of letters and numbers 11 to 13 characters in length. The first character should be a letter indicating the tire type, referring to the type of vehicle for 98kkX.
