What does index rating mean?

Author: Zena Schumm  |  Last update: Thursday, April 10, 2025

This is a numerical code created as a guide to understanding the maximum weight each tire can support when it's properly inflated to the manufacturer's recommended tire pressure. The indexes are translated to weight. Meaning that the higher a tire's load index number is, the greater its load-carrying capacity.

What is a index rating?

Index Rating means, with respect to any Rating Agency at any time, the rating assigned by such Rating Agency to the Index Debt.

What should my tire load index be?

What is the most common tire load range? Your average commuter car or light truck will range from about 70 to 124 for load index; 117 is a pretty typical load rating for a car.

What does a load index of 126 mean?

Load index ratings typically range from low numbers like 75 to higher ones like 126 for passenger car tires. As the numbers increase, so does the tire's load-carrying capacity. For example, a tire with a load index of 75 can support 853 pounds, while a tire with a load index of 126 can carry a whopping 3,748 pounds.

What does indexing a tire mean?

What does a Tire Load Index mean? To support the weight of the vehicle, each tire is assigned a designated number that coincides with the maximum weight that the tire can support when it has been inflated. A high tire load index number means the tire can hold a a greater load carrying capacity.

Understanding a Tire's Load Index

What does load index 115 mean on a tire?

The load index of a tire is a number that correlates to the maximum safe carrying capacity of the tire when it's inflated to its maximum pressure. Higher load index ratings mean your tires will be able to handle a heavier load.

What is wheel indexing?

Wheel or rotary indexing: The wheel or rotary index is a modified form of visible card index. Cards are arranged around the circumference of a wheel, which can be portable or fixed in a cabinet or desk. Entries can be made on the card without removing it from the wheel.

Does a higher tire load index affect rides?

The tire load index is not directly correlated to ride quality.

Is 116T a 10 ply tire?

A: 123R is a load range E 10ply rated tire, typically on 3/4 ton and 1 ton applications. 116T is a 4ply normally used on 1/2 ton applications.

Can I use H-rated tires instead of V?

Quite possibly. Ostensibly, the 'speed rating' means that the tire has guaranteed structural integrity up to the rated speed. As others say, H is 210km/hour while V is 240 km/hour. However in terms of tire design, it is more a measure of robustness of the tire, rather than how appropriate the tire is for a given speed.

Is it OK to have tires with different load index?

It is not recommended to use a tyre with a lower load rating than what is specified for your vehicle. Doing so can compromise your safety and the performance of your vehicle.

Does Costco install tires?

You can also schedule an appointment with one of our warehouse tire shops, who take care of tire installation, rotations, balancing, and tire inflation.

What does m and s mean on a tire?

M+S stands for Mud+Snow, indicating that the tires are suitable for use in the winter (studded or non-studded winter tires). The official winter tire marking is the snowflake symbol, also known as the 3PMSF marking.

What does the index tell you?

An index tracks the performance of a group of preselected investments, such as stocks. For example, the S&P 500 index tracks the performance of 500 of the largest U.S. companies. Investors gauge the performance of stocks, bonds or mutual funds by comparing them with the performance of an index.

What is a good quality index?

"Good" (0 - 50) Air quality is excellent and poses little or no risk. "Moderate" (51 - 100)Air quality is acceptable; however, there may be some health concern for a small number of unusually sensitive individuals. We cannot identify groups of people that are at greater risk when air quality is in this range.

What do index numbers mean?

An index number is the measure of change in a variable (or group of variables) over time. ... Index numbers are one of the most used statistical tools in economics. Index numbers are not directly measurable, but represent general, relative changes. They are typically expressed as percent.

Are LT tires harder to puncture?

Due to the stiff, multi-ply sidewalls, LT tires are resistant to flexing and punctures, making them ideal for an adventure rig, hunting truck, or heavy hauler. LT tire sizing can also differ from traditional P-metric sizing.

Do I really need 10 ply tires?

Understanding the tire ply rating system helps you understand how your tires support the weight of your vehicle (called load range or load index). If you drive a ¾ ton, one ton or even larger pickup or SUV (or haul a trailer) then you require 10-ply tires.

What are 10 ply tires called now?

LT-metric, LT-flotation and LT-numeric tires are branded with their load range (load range E or LRE) or their ply rating (10 ply rated) on their sidewalls and list their appropriate load range letter in their descriptions as LT245/75R-16 E, 7.50R-15 D or 31x10.

Can you change the load index on tires?

If you're thinking about up-sizing, you can switch to a tire with a higher load index, because that means your tire can safely carry more weight, but you can never go down.

What does UTQG mean on tires?

UTQG stands for Uniform Tire Quality Grading, a standard created by the U.S. Department of Transportation (DOT). It's a system that lets consumers compare tires based on treadwear, traction and temperature.

Does load index matter when buying tires?

As you can tell, the tire load index is massively important when you're shopping for new tires. When it's time to select new tires for your vehicle, you must select tires that can support your car's Gross Vehicle Weight Rating (GVWR). This number can be found in the owner's manual.

Is indexing good or bad?

Index funds are a low-cost way to invest, provide better returns than most fund managers, and help investors to achieve their goals more consistently. On the other hand, many indexes put too much weight on large-cap stocks and lack the flexibility of managed funds.

What are the three types of indexing?

There are three types of indexing namely Ordered, Single-level, and multi-level. Single Level Indexing is divided into three types namely Primary(index table is created using primary keys), Secondary(index table is created using candidate keys), and Clustered(index table is created using non-key values).

What is wheel load index?

Tire load index is an assigned number that corresponds to the maximum weight that a tire can support when properly inflated. Most passenger-car tire load indexes range from 75 to 100, but some are higher. The chart shows how load indexes translate to weight.

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