Contents

- 1 What does the 265 70r17 mean?
- 2 What do the 3 numbers mean on tire size?
- 3 Can I use 60 instead of 65 tires?
- 4 What does 121 118R mean on tires?
- 5 Can I use 235 tires instead of 225?
- 6 What’s the difference between 265 and 285 tires?
- 7 What number is the height of a tire?
- 8 Can I put 2 different size tires on my car?
- 9 How tall is a 17 inch tire?
- 10 What is the difference between a 60 and a 65 tire?
- 11 Are 60 or 70 tires wider?
- 12 What is the difference between a 65 and a 70 tire?
- 13 Should I get H or T rated tires?
- 14 Is Load Index 121 a 10-ply tire?
- 15 What does R and D stand for on tires?

## 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.

## 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.

## 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 121 118R mean on tires?

90S, 95T, **121**/**118R**, etc. These digits after the **tire** size, 90S in this example, are the “load index” and “speed rating”. That just **means** that the maximum pressure on one **tire** is higher than the other. However, this again is only at maximum pressure which is more than you **would** usually use.

## 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’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 number is the height of a tire?

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.

## Can I put 2 different size tires on my car?

Long story short: Yes, it is a problem to have **two tires** of **different sizes** on the front (or back) of your **car**. Having **two different**–**sized tires** on the same axle is generally not a good thing. Sometimes, people choose to **put** larger **tires** on the rear axle of their **vehicle** for handling reasons, cosmetic reasons, etc.

## How tall is a 17 inch tire?

17 INCH TIRES |
TIRE HEIGHT |
---|---|

225 35 17 |
23.20 |

245 35 17 |
23.75 |

315 35 17 |
25.68 |

335 35 17 |
26.23 |

## 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.

## Are 60 or 70 tires wider?

Generally speaking, a 215-**60** series **tire** is **wider** and has a shorter sidewall then a 215-**70** series **tire** would be and a 215-75 series **tire** would be taller and narrower then either the **70** series or the **60** series.

## 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.

## Should I get H or T rated tires?

**Tires** with higher speed ratings generally **have** better steering response and cornering grip than lower-speed **rated tires**, in addition to being capable of higher speeds. So if your car originally came with **H**–**rated tires**, that’s what you **should** replace them with. Sticking with **H**–**rated tires** comes at a cost.

## Is Load Index 121 a 10-ply tire?

Therefore **load** range simply tells how tough the **tire** is and the allowable PSI. For example, an āEā **load** range indicates that a **tire** is equivalent to a **10**–**ply** construction **tire**. In realitly, this **tire** is not built with **10 plies**, but rather one or two **plies** of equivalent strength.

## What does R and D stand for on tires?

The **D** indicates that the **tire** is a diagonal bias ply construction and the **R** indicates that the **tire** is a radial **tire** construction. Beyond the size and type, there are load ranges for **tires**. Most trailer **tires** are load range B, C or **D**.