What a load range means and why it matters for your truck

A load range is a letter (A through F, most commonly) that tells you the maximum weight a single tire can safely carry at its rated pressure. It is printed on the tire's sidewall and in the manufacturer's load range chart. For trucks, this matters because overloading a tire — even by a small amount — causes heat buildup, sidewall failure, and blowouts, especially under highway speeds or when towing.

The load range is not the same as tire size. Two tires of identical size can have different load ranges. A tire marked Load Range C can carry less weight than one marked Load Range E, even if both are 265/75R16. Your truck's door jamb sticker and owner's manual tell you the minimum load range you need; the load range chart on the tire manufacturer's website or printed documentation shows you the exact weight each rating can handle at its rated pressure.

Most light trucks use Load Range C, D, or E. Heavy-duty trucks, work vehicles, and trucks that tow frequently often need Load Range E or F. If you are replacing tires, match or exceed the load range of what came on the truck originally — never go lower.

Key Takeaways

  • Load range is a letter code (A through F) printed on the tire sidewall that shows the maximum weight one tire can carry at its rated pressure.
  • Your truck's door jamb sticker lists the minimum load range required; do not install tires with a lower rating than what the manufacturer specifies.
  • A load range chart from the tire maker shows the exact weight capacity for each load range at different pressures, usually found on their website or in the tire documentation.
  • Load range and tire size are separate — two tires of the same size can have different load ranges, so always check the sidewall marking.
  • Heavier trucks, work vehicles, and trucks that tow regularly typically need Load Range E or F to stay within safe weight limits.

Where to find the load range on your tire and in the chart

The load range appears on the tire's sidewall as a single letter, usually near the tire size. It looks like this: "Load Range E" or sometimes just the letter "E" by itself. On a tire marked 265/75R16 E, the "E" is the load range. If you cannot find it on the sidewall, check the tire documentation that came with the tire or search the manufacturer's website by tire size and model number.

The load range chart itself is published by each tire manufacturer — Michelin, Goodyear, Bridgestone, Cooper, and others all maintain their own charts. These charts are usually available as a PDF read on the manufacturer's website, or you can request one from the tire retailer where you buy. The chart lists tire sizes down the left side and load ranges across the top, with the maximum weight capacity (in pounds per tire) in each cell. You find your tire size, move across to your load range column, and read the weight capacity at your tire's rated pressure.

Some retailers print simplified load range information on their product pages or in-store materials, but the manufacturer's official chart is the authoritative source. If you are unsure which chart to use, call the tire manufacturer's customer service line or ask the retailer — they can point you to the right document for your specific tire model.

Understanding load range letters and what each one carries

Load ranges progress alphabetically, and each step up represents a higher weight capacity and a stiffer sidewall. Load Range A is the lightest (rarely seen on trucks), and Load Range F is the heaviest. The jump in capacity between ranges varies by tire size, but generally each step up adds several hundred pounds of capacity per tire.

Load Range C is common on smaller trucks and light-duty pickups. Load Range D and E are standard on mid-size and full-size trucks. Load Range F appears on heavy-duty trucks, commercial vehicles, and trucks regularly used for towing or hauling. A Load Range E tire is noticeably stiffer than a Load Range C tire of the same size — you will feel the difference in ride quality, and the E-rated tire will run hotter under the same load because the sidewall flexes less.

The load range also affects the tire's rated pressure. A Load Range C tire might be rated for 65 psi, while a Load Range E of the same size might be rated for 80 psi. The chart accounts for this: the weight capacity listed for each load range assumes the tire is inflated to its rated pressure. If you underinflate, the capacity drops. If you overinflate beyond the rated pressure, you gain no additional capacity and risk damaging the tire.

How to match the load range to your truck's weight requirements

Start by finding your truck's Gross Vehicle Weight Rating (GVWR) on the door jamb sticker, usually on the driver's side door frame. The GVWR is the maximum total weight the truck can safely carry — vehicle plus cargo, passengers, and fuel. Divide the GVWR by four to get the minimum weight each tire must support (this is a rough estimate; the actual distribution may vary slightly).

Next, find the tire size and load range currently on your truck or specified in the owner's manual. Look up that tire in the manufacturer's load range chart and confirm the weight capacity per tire at the rated pressure. If the capacity is equal to or greater than one-quarter of the GVWR, the load range is adequate. If you plan to tow or carry heavier loads regularly, choose a load range one step higher than the minimum — this gives you a safety margin and reduces heat buildup during sustained heavy use.

If you are replacing worn tires, never drop to a lower load range. If your truck originally came with Load Range E, install Load Range E or higher. Going lower risks overloading the tires and creates a safety hazard. If you are unsure whether a particular tire meets your truck's requirements, the tire retailer can cross-reference the tire model against your truck's GVWR and tell you whether it is suitable.

Common mistakes when reading load range charts

The most frequent error is confusing load range with tire ply rating. Ply rating is an older system (2-ply, 4-ply, 6-ply, 8-ply) that was used before load range letters became standard. A tire marked "Load Range E" does not mean it has five plies — load range is a separate specification. Modern tires use load range; ply rating is largely historical. Do not mix the two systems when comparing tires.

Another common mistake is assuming a higher load range tire will improve ride quality or fuel economy. The opposite is often true: a stiffer Load Range E tire rides firmer and may reduce fuel economy slightly compared to a softer Load Range C. Choose the load range your truck needs, not the highest one available. Oversizing the load range wastes money and can make the truck ride harshly.

A third mistake is ignoring tire pressure. The weight capacity in the load range chart assumes the tire is inflated to its rated pressure. If you run the tire at 70 psi when it is rated for 80 psi, the actual capacity is lower than the chart shows. Check your tire pressure monthly and maintain the pressure listed on the tire's sidewall or your truck's door jamb sticker — whichever is higher.

When you need a higher load range than stock

If you tow a trailer regularly, carry heavy cargo, or have added weight to your truck (roof rack, winch, toolbox), you may need a higher load range than the original equipment. Calculate the total weight your truck will carry under normal use — vehicle weight plus passengers, cargo, and any permanently mounted equipment. Divide by four and compare to the load range chart. If the result exceeds the capacity of your current load range, step up to the next one.

Upgrading to a higher load range also makes sense if you live in a hot climate or frequently drive at highway speeds with a full load. The stiffer sidewall of a higher load range tire generates less heat and is less prone to failure under sustained stress. The trade-off is a slightly firmer ride and potentially higher cost, but the safety benefit is worth it if you regularly push your truck to its limits.

Before upgrading, confirm that your truck's suspension and brakes can handle the additional weight. Load range is only part of the equation — your truck's frame, axles, and stopping power must also be adequate. If you are unsure, consult your truck's owner's manual or speak with a suspension specialist.

Reading the load range chart step by step

Locate your tire size on the left side of the chart. Tire sizes are listed in a standard format: 265/75R16, for example. Find the exact match — a 265/75R16 chart entry will not explore to a 265/70R16, even though they look similar.

Move across the row to the column labeled with your tire's load range letter. If your tire is marked Load Range E, find the E column. The number in that cell is the maximum weight capacity per tire at the rated pressure, usually listed in pounds.

Multiply that number by four to get the total weight all four tires can safely carry. Compare this to your truck's GVWR. If the total capacity is equal to or greater than the GVWR, the tire is suitable. If it is less, the load range is too low for your truck.

If the chart lists capacity at multiple pressures (for example, at 65 psi and 80 psi), use the capacity at the pressure printed on your tire's sidewall. Do not assume a higher pressure will increase capacity — the chart shows the capacity at each specific pressure, and overinflating beyond the rated pressure does not add capacity and can damage the tire.

Frequently Asked Questions

Can I use a lower load range tire if I do not carry heavy loads?

No. Your truck's door jamb sticker specifies the minimum load range required for safe operation. Even if you rarely load the truck heavily, the minimum load range ensures the tire can handle the truck's weight plus passengers and fuel under all normal driving conditions. Always match or exceed the manufacturer's minimum.

What is the difference between load range and ply rating?

Ply rating (2-ply, 4-ply, 6-ply) is an older system that described the number of fabric layers in the tire. Load range (A through F) is the modern standard that directly specifies weight capacity. They are not interchangeable. Modern tires use load range; ply rating is historical and should not be used to compare new tires.

Does a higher load range tire last longer?

Not necessarily. Load range affects weight capacity and sidewall stiffness, not tread durability. A Load Range E tire will not wear longer than a Load Range C tire of the same brand and model. Tire life depends on tread compound, driving habits, and maintenance — load range is separate from longevity.

What happens if I overinflate a tire to increase its load capacity?

Overinflating does not increase capacity and damages the tire. The load range chart shows capacity at the tire's rated pressure. Inflating above that pressure causes the center of the tread to wear faster, reduces traction, and increases the risk of blowouts. Always inflate to the pressure on the tire's sidewall or door jamb sticker.

How do I know if my truck needs Load Range E instead of Load Range D?

Check your truck's GVWR on the door jamb sticker and divide by four. Look up both Load Range D and E in the manufacturer's load range chart for your tire size. If the Load Range D capacity is less than one-quarter of the GVWR, you need Load Range E. If you tow or carry heavy loads regularly, upgrade to Load Range E even if Load Range D is technically adequate.