Contents

- 1 What do the 3 numbers mean on tire size?
- 2 What does the 265 70r17 mean?
- 3 Can I use 60 instead of 65 tires?
- 4 What does 225/45 mean on a tire?
- 5 Can I use 235 tires instead of 225?
- 6 Can I use 215 tires instead of 205?
- 7 What’s the difference between 265 and 285 tires?
- 8 What is the difference between 225 and 265 tires?
- 9 Are wider tires better?
- 10 What is the difference between a 60 and a 65 tire?
- 11 What is the difference between 60 and 70 series tires?
- 12 What is the difference between a 65 and a 70 tire?
- 13 What does the last number on a tire mean?
- 14 Can I replace tire with different size?
- 15 Do tire sizes have to match exactly?

## What do the 3 numbers mean on tire size?

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 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.

## Can I use 60 instead of 65 tires?

Physically, yes they will fit. It is recommended to stay within 3% of the original **tire** size on the car though. The size you have is 3.09% smaller, so not recommended. You **could** go with 205/**60**-15 though if you **can** get a better deal on that size.

## What does 225/45 mean on a tire?

The number “225” stands for the width of the **tire** in millimeters – so in this case the **tire** is 22.5 cm wide. The “45” that follows is the aspect ratio – the height of the **tire** sidewall as a percentage of its width.

## 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**.

## Can I use 215 tires instead of 205?

Nope. The nominal diameter of the **215’s** is 1.7% greater than that of the **205’s**. The sidewall height is a percentage of the width of the **tire**, so a 55 series is taller with a wider **tire**.

## 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.

## What is the difference between 225 and 265 tires?

The first numbers is the distance across the **tire**. The **265** would be 40 mm wider than the **225**. Be careful to make sure the diameter of the **tire** is the same with the **different** size **tires**. **265** is more broader tyre.

## 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.

## What is the difference between a 60 and a 65 tire?

The **65**% aspect ratio (as **in** 235/**65**/17), compared to **60**%, adds almost 12 mm (1/2″) to the radius of the **tire** (0.65-0.60)*(235mm)=11.75mm.

## What is the difference between 60 and 70 series tires?

The **series** is a % of the sidewall compaired to the width. A **70 series tire** sidewall height is **70** % of the **tires** tread width, a **60 series tire** has a sidewall hight of **60**% of the **tires** tread width.

## What is the difference between a 65 and a 70 tire?

The series number **in a tire**-numbering system refers to the aspect ratio of the **tire’s** sidewall height to its width. A series **65 tire’s** height is **65** percent of its width, a series **70 tire’s** height is **70** percent of its width and so on.

## 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.

## Can I replace tire with different size?

When **changing** your **tire size** might be acceptable

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**.

## Do tire sizes have to match exactly?

That said, the only **dimensions** you can change are the width and aspect ratio — never the wheel **size**, unless you buy replacement wheels — and you should always strive to keep the total height of the **tire** the same as the OEM.