# View Here : Tire Size 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.

Tire Size Meaning. 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. In example "B" this reads 305mm. There are 25.4 mm in one inch.

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.

The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall. We know that this tire size's section width is 225mm and that its section height is 50% of 225mm.

Studless Ice and Snow Tire Sizes For the harsher winter climates, 195/65-15 would be the optimum winter tire size in the Studless Ice and Snow category. 195/65-15 is narrow enough to cut through deep snow but wide enough to brake, turn and accelerate on hard-packed snow or ice.

TIRE SIZE. The P stands for PMetric. If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire. 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.

Example: How to Use These Size Numbers. Note that if your tire size is something like 30x10.50x15 or 34x9x16, you have American sized tires in good ole inches. In these two given examples, the tires would be 30 inches tall and 10 1/2 inches wide for a 15 inch rim or 34 inches tall by 9 inches wide for a 16 inch rim.

North America. Tire size was again specified by width in inches and diameter in inches. To differentiate from the earlier 90-ratio tires, the decimal point is usually omitted from the width - for example 685-15 for a tire 6.85 inches wide. Starting in 1972 tires were specified by load rating, using a letter code.

Tire size can be confusing. Some numbers on the sidewall are listed in metric while others are in inches. Plus, the right size for your car, truck or trailer can differ depending on tire use and your driving habits. You can see your original equipment tire size in your owner’s manual. This is the sizing recommended by the vehicle manufacturer.

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