View Here : Tire Numbers Meaning
You should always set your air pressure to your vehicle manufacturer’s specifications as stated in your owner’s manual or on the tire information placard inside the vehicle. The maximum load number, (1653 LBS) is the load carrying capacity of the tire when it is inflated to the maximum inflation pressure.
What do the numbers on tires mean? There's a massive amount of information branded on the sidewall of every tire ... 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.
With a little explanation it's easy to understand what all of the letters and numbers mean on your tire's sidewall. The numbers are indicators of the size, type, and performance of the tire.
Tire Identification Number: The series of letters and numbers following the letters "DOT." The TIN consists of up to 12 numbers and letters to identify the factory location and the week and year the tire was manufactured.
Typically following the three digits identifying the tire's Section Width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio. P225/ 50 R16 91S The 50 indicates that this tire size's sidewall height (from rim to tread) is 50% of its section width.
What do the numbers mean on the sidewall of your tire? At first glance, you look at your tire sidewall and think, “’Do I need a super secret decoder ring to read this?” In addition to the model name of the tire there is a series of numbers that at first, you don’t deem important.
Tire Sizing …measurement and means NOTHING without the first number. I get a number of calls from guys telling me that they want some 60 series or 50 series tires. I can't help these guys if they don't know how tall a tire they need for their application. 195 x .70 = 136.5mm (meaning the sidewall is…
The first number in this series refers to the tire's section width, or the distance from sidewall edge to sidewall edge, measured in millimeters up and over the tire's tread.