# How To Read Numbers On Tires?

## What do the numbers mean on tires?

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.

## What does the 265 70r17 mean?

This number indicates that your tire has a width of 265 millimeters. 70. This number means that your tire has an aspect ratio of 70%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 70% of the width. In this case, the sidewall height works out to be 185 millimeters.

## How do you read a tire marking code?

1. 3-digit number: The “nominal section width” of the tire in millimeters; the widest point from both outer edges (side wall to side wall).
2. /: Slash character for character separation.
3. 2- or 3-digit number: The “aspect ratio” of the sidewall height as a percentage of the nominal section width of the tire.
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## How do you read tire sidewall numbers?

How To Read A Tire Sidewall

1. TIRE SIZE.
2. P identifies your tire as a Passenger Tire.
3. 225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters.
4. 50 is the two-figure aspect ratio.
5. R indicates the construction used within the tires casing.

## Can I use 235 tires instead of 225?

Yesthat size will work 100% perfectly, as it is the exact same diameter as the 225/75-16. 235/70-16 is actually a shorter tire.

## What are the 3 numbers on tires mean?

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. It’s the height of the sidewall measured from wheel rim to top of the tread, expressed as a percentage of tire width. In other words, it’s sidewall height divided by tire width.

## What’s the difference between 265 and 285 tires?

The larger 285/70R17 tire in the photo above stands over an inch taller and is nearly an inch wider than the 265/70R17 size. The width of the tread is also a half-inch wider. Many late-model domestic trucks accept this difference in size.

## Are wider tires better?

From a safety point of view, both types have their good sides: On a dry road, wider tires will offer more grip than narrow ones, but the risk of aquaplaning will be higher with wide tires. – In the winter, narrow tires are better under extreme conditions as they provide higher surface pressure against the road.

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## How tall is a 285 70R17?

P-Metric Tire Sizes – P-Metric to Inches Conversion Chart

Rim Size P-Metric Size Actual Tire Height
17 Inch 265/70R17 31.6 inches
275/70R17 32.2 inches
285/70R17 32.7 inches
285/75R17 33.8 inches

## Why do you only stab out 3 tires?

That way they wouldn’t be able to get the buy three get one free deal. Insurance will cover if all 4 are slashed; they won’t cover 3 tires.

## What does V mean on tires?

Speed Rating V

Once the highest speed rating a tire could have, “V” used to represent a maximum of 149 mph (240 kph) or more. Nowadays, it means 149 mph but no higher.

## What tire size can I put on my car?

As a general rule of thumb, it’s safe to fit a tire up to 20 millimeters wider than stock on the original rim. The actual width of the tire will vary depending on the width of the rim: The tire will expand 5 millimeters for every half inch (12.5 millimeters) increase in rim width.

## Can I put different size tires on my car?

It’s possible to change the size of your tires without actually changing the diameter. Generally, you don’t want to go with tires that have a diameter that is more than 3% different from the factory tires. It’s also a good idea to consult with a trusted mechanic before switching to larger or smaller tires.

## Does tire sidewall size matter?

Overall, bigger tires and wheels are better for increasing your vehicle’s traction. Changing to larger tires with an improper sidewall height can cause damage to your vehicle’s suspension system, wheels, and the tires themselves, and can run the risk of incorrect speedometer readings.

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## What does the T or H mean on tires?

All these ratings cover speeds well above legal limits. The most popular, S, T, and H, are rated for 112, 118, and 130 mph, respectively. Traditionally, most family cars have used S- and T-rated tires, while tires rated H and higher have mostly been available only in sports cars or upscale sports sedans.