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What do the numbers mean on a tire?
The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.
How do you read a tire code?
Remember that the last four digits of the code are the date the tire was manufactured. You can check the first two digits of the DOT code to know the week of the manufacturing. The last two digits will reveal the manufacturing year. For instance, when it was written in 0203, the manufacturing year was 2003.
What information is on the side of a tire?
Another important piece of information on your tire’s sidewall is often referred to as the Department of Transportation, or DOT, code and the Tire Identification Number, or TIN.
What does 4.00 mean on a tire?
4″ = refers to the diameter of the rim, in inches It is not unusual for tire dimensions to be slightly different than the tire markings. For example, a 4.80/4.00-8″ tire typically has a 15.5″ diameter rather than the 16″ diameter you would expect.
What do the 3 numbers mean on a tire?
B: TIRE WIDTH The three-digit number following the letter is the tire’s width (from side to side, looking at the tire head on) in millimeters. This may also be referred to as the section width. In this example, the aspect ratio is 65, meaning the sidewall is 65 percent as high as the tire is wide.
What does the red dot on a tire mean?
maximum radial force variation
When performing uniformity match-mounting, the red mark on the tire, indicating the point of maximum radial force variation, should be aligned with the wheel assembly’s point of minimum radial run-out, which is generally indicated by a colored dot or a notch somewhere on the wheel assembly (consult manufacturer for …
What does V mean on tires?
Speed ratings
V – Speed ratings are represented by letters ranging from A to Z. Each letter coincides to the maximum speed a tire can sustain under its recommended load capacity. For instance, V is equivalent to a maximum speed of 149 mph.
What does the last number on a tire mean?
The very last number in the sequence, “15,” is the diameter of the tire. This is an important number—this is the number you’ll refer to when you need to know your tire size! The “15” indicates that this particular tire would fit a rim with a 15-inch diameter.
What does 4.80-12 mean on a tire?
Expert Reply: Yes, a 4.80-12 trailer tire uses a 12 inch diameter wheel that is 4 inches wide. The 4.80 spec is the width of the tire. They come with either a 4 on 4 inch bolt pattern or a 5 on 4-1/2 inch bolt pattern.
What does 4.00 6 mean on a tire?
The first number is the height of the tire sidewall, and the second number is the rim diameter. To get the overall diameter you need to do some math! 6 (rim diameter) + 4.00 (sidewall height) X 2 = 14 inches total diameter.
What’s the difference between a 225 tire and a 235 tire?
The width of a 235 tire is 10mm wider than that of a 225 tire. A 235 tire also has a 15mm bigger diameter and is 7.5mm taller than a 225 tire.