Where can I find my tire size? The tire size for your vehicle and wheels can be found in two places: Sidewall of your tire. Inside frame of the driver side door.

## How to calculate tire size?

Just type in a metric or standard size tire and click calculate. Inch measurement tires are fairly easy to understand however metric tires use a more difficult system to read. The first number on a metric tire is the width in millimeters. Divide this number by 25.4 to get the inch equivalent as there is 25.4 mm in 1 inch.

## How do I know if my tires are all-season?

All-season tires carry this mark. Find the information in your vehicle owner’s manual in the glove compartment or on the tire information sticker on your driver’s side door. Usually those elements contain all the information related to your tire size and specifications as well as the appropriate tire pressure.

## What do the numbers on a tire mean?

In the tire size, the first three numbers refer to the width of the tire. As an example, if your tire size is P225/65R17, the width of the tire would be 225 millimeters. 3. Aspect Ratio After the slash mark, the next number you will see is the tire’s aspect ratio. The aspect ratio of a tire is the height of the cross-section compared to the width.

## How do I find out what tyres I Need?

Using Your Tyre Facts. Once you have found out the vital statistics about your tyres, you can use the Protyre ‘find your car tyre size’ feature on our website. Select the ‘choose by tyre size’ option and simply fill in some of the basic information written on your existing tyres to find the tyres that you need.

## How long do tires last?

On average, people drive between 12,000 to 15,000 miles a year, which means the average good quality all-season tire will last somewhere between three and five years, depending on maintenance, driving style and conditions, etc.

### How long does a tire tread last?

The rubber compounds in a tire deteriorate with time, regardless of the condition of the tread. For some people, old tires might never be an issue. If you drive a typical number of miles, somewhere around 12,000-15,000 miles annually, a tire’s tread will wear out in three to four years,…

### Do tires expire?

It may be tentative, but tires do have an expiration date. There is a general consensus that most tires should be inspected, if not replaced, at about six years and should be absolutely be swapped out after 10 years, regardless of how much tread they have left. How do you know how old your tires are?

### How many miles do high-performance tires last?

Or less; some high-performance tires on cars driven aggressively will be worn to the 2/32-inch point without ever seeing 15,000 miles, but those are extreme cases. The average American drives between 14,000 and 15,000 miles a year, according to data from the Federal Highway Administration.

### What happens if a tire is older than 6 years?

Kane and his organization have identified over 250 incidents in which tires older than six years have experienced tread and belt separations — most resulting in loss-of-control and rollover crashes. These incidents were the cause of 233 fatalities and 300 injuries in 2012. Every tire that’s on the road long enough will succumb to age.

## How do you check tire pressure?

How to check tire pressure

- Remove the cap from the air valve on the tire, and put it somewhere you won’t lose it.
- Press the tire gauge against the open valve stem for a second or two. …
- Read the air pressure gauge. …
- Compare this number with the recommended tire pressure.
- Replace the tire’s air valve cap.

## What do tyre numbers mean?

The important number on the side of your tyre – the indicate the size, profile and the weight and speed ratings of your tyre. These number represent, in order, the section width (225), aspect ratio (45), construction (R), rim diameter (19), load index (92) and speed rating (W).

### What do the numbers on my tires mean?

Each number and letter on your tires mean different things. Let’s take this example tire size and break down what each part means: P235/75R15 105S P —The P in the beginning of this number stands for the type of tire you have. “P” means the tire is made for lighter passenger cars.

### What are the tyre marking numbers?

The numbers are a confusing mess of millimetres, inches, percentages and other codes, which can make it all a bit bewildering. Our helpful tyre markings guide clearly explains all the key numbers and letters, without any jargon or sales spiel.

### What does tyre size mean?

It is important to know exactly what is meant by tyre size. The code that is found on the tyres gives more than just the basic size. The size elements are essentially the tyre’s height and width. Tyre sizes will also vary depending on the type of vehicle i.e. van and lorry tyres tend to be larger/chunkier than car tyres.

### What does 235 mean on a tyre?

The first number is the easiest and measures the width of the tyre in metric millimetres. 235 means your tyre is 235mm wide. The second number refers to the profile of the tyre or the height of the tyre’s sidewall. The number isn’t in millimetres but is instead an aspect ratio measurement of how the height relates to total width.

## How wide is a 235 tire?

The “235” grouping indicates the width of the tire from sidewall to sidewall in millimeters. So, in this example, the tire is 235 millimeters — 9.25 inches — wide from sidewall to sidewall.

### How wide are 235/75R15 tires?

235/75R15 tires have a diameter of 28.9″, a section width of 9.3″, and a wheel diameter of 15″. The circumference is 90.7″ and they have 699 revolutions per mile. Generally they are approved to be mounted on 6-8″ wide wheels for passenger tires and 6-7″ for LT tires. Upsizing Wheels or Tires?

### What is the difference between 215 and 235 tires?

215 tires mean that the width of your tires is 215 mm. Meanwhile, 225 tires have a width of 225 mm and 235 tires have a width of 235mm. NOTE: The width of a tire is measured from sidewall to sidewall in millimeters, not the contact patch only When you look at every tire, there will be a series of three numbers on the sidewall.

### What is the width of a tire?

This can also be referred to as the section width. In the tire size, the first three numbers refer to the width of the tire. As an example, if your tire size is P225/65R17, the width of the tire would be 225 millimeters. 3. Aspect Ratio After the slash mark, the next number you will see is the tire’s aspect ratio.

### What does 225 mean on a tire?

This number indicates that your tire has a width of 225 millimeters. The tire size was designed to fit rims or wheels that are 17 inches in diameter. This number means that your tire has an aspect ratio of 50%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 50% of the width.

## How wide is a 265 tire?

For example a LT265/75R16 would be around 31.6 inches tall and 10 inches wide.

### How tall is a 265/75r16 tire?

Below are the most common tire sizing information in inches: 265/75R16 Height – How tall is a 265/75R16 tire in inches? This tire size is 31.65 inches tall. 265/75R16 Width in inches – How wide is a 265/75R16 tire? This tire size is 10.433 inches wide (tread width). What’s the Sidewall Size of a 265/75R16 Tire in Inches?

### How many inches in 265 mm?

265 is the millimeter measurement of the tire and the equation to convert is simple. Just divide 265 by 25.4 and you will get 10.43 inches. That number is often referred to as the section width. It is hard to translate 70% into inches but the distance between the sidewall height, from the outside of the tread, is going to be 7.3 inches.

### Does a 265 fit a 275 rim?

What is interesting is that despite these little differences, the 265 and the 275 both fit on the same rim. You can change rim sizes to an 18 from a 17 inch or a 16-inch rim and the 275 will still be the larger tire. Except in the revolutions per mile. What is The Difference Between a 265 and 275 Tire?

### What does p & 265 mean on a tire?

The second listing is a metric set up, and is what is more common on factory-type sized tires. From left to right, the P indicates a passenger tire while 265 indicates the tires width in millimeters. That 75 is the tire’s aspect ratio and simply means the tire’s height is equal to 75 percent of its width.

## What is tire speed rating?

Most modern passenger tires bear a tire speed rating, a designation indicating the tire’s designed speed capability. In other words, it’s the fastest speed a tire can handle before it does not perform as designed.

## What does r17 on a tire mean?

R indicates the construction used within the tires casing. R stands for radial construction. B means belted bias and D stands for diagonal bias construction. 17 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches.

### What does 17 mean on a tire?

The number ( 17) is Wheel Diameter. It is the size of the wheel measured from one end to the other. It tells you the size of the wheel that the tire is intended to fit on. The next number ( 95) is the Load Index. Load Index shows the maximum load that the tire can support when inflated properly.

### What does R Mean on a p185/75 R17 82s?

For a P185/75 R17 82S tire, the “R” means the tire has a radial construction. Tires may have a bias-ply construction instead, as indicated by the letter “D.” Bias-ply tires are an older style so they’re more common on classic cars, but they’re also used in drag racing applications. Radials are by far the most common today.

### What does 225-60r17 mean?

Tire sizes are easy to understand once you learn how to read them. On this page you’ll find a color-coded explanation of the 225-60R17 tire code. This number indicates that your tire has a width of 225 millimeters. The tire size was designed to fit rims or wheels that are 17 inches in diameter.

### What does p225/65r17 mean?

The aspect ratio of a tire is the height of the cross-section compared to the width. This two-digit number is found after the slash symbol in the tire size. In the example used above, P225/65R17, the 65 is the aspect ratio. It shows that the height of the tire is equal to 65% of the width.

## What tyre size means?

The tyre size is: P205/65 R16 95V. The first number is the width of the tyre in millimetres. Therefore, this radial tyre has a width of 205mm. The ’65’ confirms the height shown as a percentage of the full tyre width. The letter ‘R’ depicts the variety of tyre.

### What are tire sizes?

What Are Tyre Sizes? The tire size is related to the width and height of the rubber your car is wearing, as well as the maximum speed at which you are allowed to travel. Although the numbers are on the sidewalk, few people know how to interpret them.

### What do the three numbers on a tire mean?

The three numbers on tire size represent the width, height, and diameter of the tire, respectively. The width is measured in millimeters and indicates how wide the tire is from side to side. The height is measured in a height-to-width ratio. The diameter is measured in inches and tells you the size of the rim or wheel that the tire will fit onto.

### How do you measure a tire?

The tire is measured by its width. This measurement is given in millimeters, based on how much room there is between each sidewall. This can also be referred to as the section width. In the tire size, the first three numbers refer to the width of the tire.

### What is the aspect ratio of a tyre?

The aspect ratio, or profile, refers to the height of the sidewall as a % of the section width. In our example, 55 means the height is equal to 55% of the 195mm width. The bigger the aspect ratio, the bigger the sidewall will be. The letter R means the tyre is a radial construction.

## How do tyre sizes work?

We break it down below: The first set of numbers, 205 in this instance, refers to the width of the tyre in millimetres. The second number, 55, is known as the ‘profile’ or ‘ratio’ of the tyre. Essentially, this refers to the height of the tyre sidewall – the bigger the number, the more sidewall you’ll have.

### How to calculate tyre size?

Even without a tyre calculator, it is still possible to calculate the tyre size. For this, all you need is the tyre labelling and the following formula: The tyre circumference is derived from the wheel rim size (R) in inches and the ratio of the height (H) and width (W).

### How does a tyre aspect ratio affect a car?

The aspect ratio of a tyre also has an effect on the way your car behaves on the road. The higher the aspect ratio the taller the tyre is in relation to its width, or how tall the sidewall is.

## How wide is a 245 tire?

A 245 is 245 millimeters, or 24.5 centimeters, wide. The tread width is actually somewhat smaller than the tire’s actual width.