What does the third number on a tire mean?

What does the third number on a tire mean?

This small but simple concept is probably the hardest part of understanding tire sizes. The third number is simply the diameter of the rim ( aka wheel ) that the tire was manufactured to fit on. This number is still given in American inches. Ok, so let’s review this briefly. A P225/60R16 tire is a radial tire that fits a 16-inch rim.

What does ZR mean on the side of my tire?

What does ZR mean on the side of my tire? ZR shown on the sidewall of your tire is a reference to the tire’s speed rating.. Historically, the speed rating ZR on a tire meant that the construction of the tire could reach of 150 miles or 240 kilometers per hour. Today, a tire labeled ZR, has more capabilities than before.

What is the first number in a tire size?

The first number in a tire size, say 225, is the width of the tire in millimeters. This is pretty straight forward except that in the days of buying tires sized by the inch (remember 31/10.50×15), the first number was the height rather than the width.

What does the number 60 mean on a tire?

For example, the number 60 in the above illustration represents that the height is equal to 60% of the width. This factor shows how sensitive the tire’s reaction to the texture of the road is. The bigger the aspect ratio, the thicker the sidewall of the tire.

What do the numbers on my tire mean?

1 TIRE SIZE. P identifies your tire as a Passenger Tire. The P stands for PMetric. 2 LOAD INDEX AND SPEED RATING. The load index and speed rating, or service description, are the numbers that follow the tire size. 3 Rating Maximum Speed Use

Where do you find the service description on a tire?

Since 1991, the service description rating is mandatory for all speed ratings (except Z-rated tires) and appears at the end of the tire’s size brand. The service description is used to identify the tire’s load index (91 in the example above) and speed rating (V in the example).

What does it mean when a tire starts with a T?

If the tire size begins with a T, it means that the tire is a temporary spare. Also known as mini spares or space savers, temporary spares are designed for short-term use until the regular tire is repaired or replaced.

When to call creamery tire for tire service?

With over 30 years of experience in the tire service industry, our highly trained technicians have what it takes to give you superior service that will keep your tires in peak condition. If you notice that you have a wheel alignment problem, call Creamery Tire right away.

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