Contents

- 1 What is a good load index for tires?
- 2 What does 120 load index mean on tires?
- 3 What is load index and speed rating for tires?
- 4 What does the T or H mean on tires?
- 5 Is a higher load index better?
- 6 Does tire load index affect ride?
- 7 What is a 121 load rating?
- 8 What’s better load range D or E?
- 9 Do XL tires ride rough?
- 10 What does 121 118R mean on tires?
- 11 Should I get V or H rated tires?
- 12 What does Q mean on a tire?
- 13 Which is a higher speed rating H or T?
- 14 What does speed rating t mean for tires?
- 15 What is the highest speed rating for a tire?

## What is a good load index for tires?

A **tire** with a lower **load index** than the Original Equipment **tire** indicates the **tire** does not equal the **load** capacity of the original. Typically, the **load** indexes of the **tires** used on passenger cars and light trucks range from 70 to 126.

## What does 120 load index mean on tires?

For example, a light truck **tire** with a **load index** of **120**/116 **means** a **load** capacity for a single **tire** of 3,086 pounds and a **load** capacity of 2,756 pounds for two **tires**. The reason the capacity for two **tires** is lower than a single **tire** is to make sure that the vehicle can continue to carry the **load** should one **tire** fail.

## What is load index and speed rating for tires?

The **load index** indicates how much weight a **tire** can safely carry at maximum air pressure, and the **speed rating** represents the maximum operating **speed**.

## 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.

## Is a higher load index better?

The **higher** the tire’s **load index** number, the greater its **load** carrying capacity. Typically, the **load indexes** of the tires used on passenger cars and light trucks range from 70 to 130.

## Does tire load index affect ride?

Within the **load index** of a specific **tire**, one adjusts the **tire** pressure to achieve the desired **load** capacity; that **tire** pressure will also **affect ride** comfort and wear patterns on the tread (too high a pressure, and the tread will wear faster in the middle than at the side; too low a pressure, and the tread will wear

## What is a 121 load rating?

The **load rating** of the tire displays the **weight** a tire can carry. The product of the **load capacity** of a single tire and the number of tires determines the **load** carrying **capacity** of all the tires combined. The **rating** of **121** shows that it has a **load capacity** of 3297LBS.

## What’s better load range D or E?

For a given brand and size tire, the **load range E** has a **higher** maximum **load** capacity than the **load range D**. The **E** tire is built and rated for 80 psig, while the **D** tire is (as I recall) built and rated for 65 psig maximum inflation pressure.

## Do XL tires ride rough?

The **XL tires** have a stiffer sidewall and will **ride** a bit more ‘**rough**‘. Probably will respond quicker too as they have stiffer sidewalls.

## 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.

## Should I get V or H rated tires?

To support running at higher speeds, **V**–**rated tires** will **have** a stiffer sidewall and slightly firmer ride than **H**–**rated tires**. For normal driving conditions the **H**–**rated tire** will provide a more comfortable ride and the **V**–**rated should** give slightly better handling.

## What does Q mean on a tire?

**Tires** with a **Q** speed rating can safely sustain speeds of up to 99 miles per hour. The **tire** may be able to reach higher speeds, but going faster than 99 mph for any length of time **is** not safe. The **tire is** not designed to handle the stresses.

## Which is a higher speed rating H or T?

**H rated** tires have stronger construction than **T rated** tires. The concern may not be **speed** although a Subaru can exceed 118 MPH hence those tires however it may be load **rating** of the tires. Lessor **speed rated** tires must be able to handle the listed load of your vehicle properly. Confirm this, a good tire shop will.

## What does speed rating t mean for tires?

**T**. A T **rating** indicates the **tire** is approved for **speeds** up to 118 mph (190 km/h) under optimal conditions. **T** ratings are most associated with standard touring **tires**, and everyday passenger vehicles like family sedans and minivans.

## What is the highest speed rating for a tire?

Tires having a maximum speed capability over 149 **MPH** may have “ZR” in the size designation. Tires with a maximum speed capability over 186 **MPH** are required to include “ZR” in the designation.

ZR Designation.

EXAMPLES | |
---|---|

Tire Designation | Maximum Speed |

P275/40ZR17 93W | 270 km/h (168 mph) |

P275/40ZR17 93Y | 300 km/h (186 mph) |