What Is Tire Load Rating? A Complete Guide
Learn what tire load rating means, how to read the load index, and why it matters when choosing tires for your car, truck, or SUV. Get expert help today!
What Is Tire Load Rating?
When you choose new tires for your car, truck, or SUV, size isn’t the only specification that matters. Tire load rating indicates how much weight a tire is designed to support under specific conditions.
Understanding load rating is especially important for trucks, SUVs, work vehicles, and vehicles used for towing or carrying heavy cargo.
At Automotive Expressions, we help drivers understand wheel and tire specifications so they can make informed decisions about replacements and upgrades.
What Does Tire Load Rating Mean?
A tire’s load rating refers to the maximum weight the tire is designed to carry under specified conditions. This is typically represented by a numerical load index.
For example, you may see:
245/65R17 107H
In this example, 107 is the load index, while H represents the speed rating. The load index corresponds to a specific maximum weight capacity based on standardized specifications.
It’s important to note that the load index itself isn’t the weight in pounds. You need to reference a load index chart to determine the corresponding capacity.
Why Is Tire Load Rating Important?
Your tires need to support the weight of your vehicle, passengers, and cargo within the manufacturer’s specifications.
Load rating is especially important for:
- Pickup trucks
- SUVs
- Commercial vehicles
- Vehicles used for towing
- Vehicles carrying heavy cargo
- Larger or modified vehicles
If you regularly haul equipment or tow a trailer, selecting tires with an appropriate load capacity is essential.
How Do I Find My Tire’s Load Rating?
You can usually find the load index on the tire sidewall after the tire size.
For example:
265/70R17 115T
Here:
- 265 = Tire width in millimeters
- 70 = Aspect ratio
- R = Radial construction
- 17 = Wheel diameter
- 115 = Load index
- T = Speed rating
You can use a load index chart to determine the weight capacity associated with the number. Your vehicle’s recommended tire specifications can also be found on the driver’s-side door jamb label or in the owner’s manual.
Load Rating vs. Speed Rating
Load rating and speed rating describe different tire characteristics.
The load index indicates the tire’s rated load-carrying capacity under specified conditions. The speed rating indicates the tire’s rated ability to perform at certain sustained speeds under specified testing conditions.
Both specifications should be considered when selecting replacement tires.
Do Larger Tires Have a Higher Load Rating?
Not necessarily. A larger tire isn’t automatically capable of carrying more weight. Load capacity depends on the tire’s specific construction and specifications.
If you’re changing tire sizes or upgrading your wheels, always check the new tire’s load index rather than assuming a larger tire provides greater capacity.
What Are XL and LT Tires?
You may see additional markings when shopping for tires.
XL, or Extra Load, identifies tires designed to carry a higher load at specified inflation pressures than standard-load versions of comparable size.
LT indicates a Light Truck tire designed for applications that may involve higher load or towing demands.
Not every truck or SUV requires LT tires. The appropriate tire depends on your vehicle and how you use it.
What About Towing and Hauling?
If you tow or haul, load capacity becomes particularly important. Passengers, cargo, and trailer tongue weight all contribute to the load placed on your vehicle.
Always follow your vehicle manufacturer’s weight and towing limits. Your tires should also meet the manufacturer’s specifications for your application.
Proper inflation is important as well. A tire’s maximum load capacity is associated with specific inflation conditions, so follow the recommended tire pressure listed on your vehicle’s door jamb label or owner’s manual.
Choosing the Right Tire Load Rating
When you need to install tires, start with the specifications recommended for your vehicle. If you’re considering a different tire size or upgrading your wheels, make sure the new tires provide appropriate load capacity for your vehicle and intended use.
At Automotive Expressions, we can help you evaluate wheel and tire options based on your vehicle and driving needs. Whether you’re looking for tires for daily driving, a work truck, or a custom wheel and tire package, understanding load ratings is an important part of choosing the right setup.
Get Help Selecting the Right Tires
Tire size is only one factor to consider when selecting new tires. Load capacity, speed rating, tire type, and intended use are also important.
If you’re unsure which load rating or tire specifications are right for your car, truck, or SUV, contact Automotive Expressions. Our team can help you explore your options and find a wheel and tire combination suited to your vehicle and needs.
Frequently Asked Questions About Tire Load Ratings
What is a tire load rating?
A tire load rating indicates how much weight a tire is designed to support under specified conditions. The load index is the numerical code on the tire sidewall that corresponds to a specific load capacity.
How do I find my tire’s load rating?
Look at the tire sidewall after the tire size. In 245/65R17 107H, for example, 107 is the load index. A load index chart can show the corresponding weight capacity.
Do I need a higher load rating for my truck or SUV?
Not necessarily. Choose a load rating that meets your vehicle manufacturer’s requirements and is appropriate for your intended use. Towing and hauling may require additional consideration.
Are XL tires the same as LT tires?
No. XL, or Extra Load, tires are designed for higher load capacity under specified conditions, while LT tires are designed for Light Truck applications. They serve different purposes.
Can Automotive Expressions help me choose the right load rating?
Yes. Automotive Expressions can help you evaluate tire size, load rating, speed rating, and other fitment considerations to help you find the right tires for your vehicle and driving needs.