Load Range C Weight Capacity: What It Means and How It Affects Your Vehicle

If you've ever shopped for tires — especially for a light truck, van, SUV, or trailer — you've probably seen a letter code stamped on the sidewall. Load range is one of the most important specs on that sidewall, and Load Range C is one of the most common ratings you'll encounter on working vehicles. Understanding what it means — and what it doesn't — helps you match the right tire to the right job.

What Load Range Actually Measures

Load range is a letter-based rating system that tells you how much air pressure a tire is designed to handle and, by extension, how much weight it can safely carry. The letters correspond to ply ratings, a term left over from when tire strength was measured by the number of fabric layers inside the casing.

Modern tires use synthetic belts and steel, not raw cotton plies — but the rating system stuck. Higher letters mean stronger construction, higher maximum inflation pressure, and higher load capacity.

Load Range C corresponds to a 6-ply rating. That doesn't mean six physical layers; it means the tire is built to the structural equivalent of that older standard.

Load Range C Weight Capacity by Tire Size

The actual weight capacity of a Load Range C tire depends heavily on its size. A wider, larger-diameter tire carries more weight than a narrow one, even within the same load range. It also depends on whether the vehicle runs single rear wheels (SRW) or dual rear wheels (DRW), since dual-mounted tires carry slightly less per tire than single-mounted ones.

Here are approximate maximum load capacities for common Load Range C tire sizes at maximum inflation pressure (typically 50 psi for LRC):

These figures come from tire load index charts and can vary slightly by manufacturer. Always check the actual load index number molded into your specific tire's sidewall — that number gives you the precise rated capacity.

How Load Range C Compares to Other Ratings

Putting Load Range C in context helps clarify where it fits in the spectrum of light-duty to heavy-duty applications:

Load Range C sits in a middle tier — stronger than standard passenger tires, but not as robust as the Load Range E tires common on heavy half-ton and three-quarter-ton trucks. It's frequently used on cargo vans, light-duty pickup trucks, boat trailers, utility trailers, and older 4x4 vehicles.

What Determines Whether Load Range C Is Enough 🔧

The load range rating needs to match — or exceed — the demands placed on the tire. Several variables shape whether LRC works for a given setup:

Vehicle GVWR (Gross Vehicle Weight Rating): This is the maximum loaded weight the manufacturer has certified for the vehicle. If the GVWR divided across four tires exceeds what LRC can handle, you need a higher load range.

Payload and cargo: A van carrying heavy tools daily puts very different stress on tires than the same van used for occasional light hauling. The weight you routinely carry — not just maximum capacity — affects how much load range margin you need.

Trailer tongue weight: If you tow, the tongue weight pressing down on the hitch transfers load to the rear axle and rear tires. This gets added to the vehicle's own weight when calculating what the rear tires must support.

Inflation pressure: Load range ratings assume tires are inflated to their maximum rated pressure. Running an LRC tire at lower pressure reduces its effective load capacity. Under-inflation combined with heavy loads is one of the primary causes of tire failure.

Single vs. dual rear wheels: Dual-rear setups split the load between two tires per side, which changes the math significantly.

The Sidewall Tells You More Than the Letter

Every tire has a load index number alongside the speed rating in its size designation. That number maps to a specific weight in pounds. The load range letter tells you the construction tier; the load index tells you the exact capacity.

For example, a tire marked LT235/85R16 116/113Q C means:

• LT = light truck designation
• 116/113 = dual/single load index (maps to approximately 2,756 / 2,535 lbs)
• Q = speed rating
• C = Load Range C

Both pieces of information matter. ⚖️

Where Load Range C Shows Up Most Often

Load Range C tires are common on:

• Full-size cargo vans (passenger and commercial)
• Older half-ton pickup trucks
• Light-duty trailers and utility trailers
• Some camper trailers
• Certain SUVs and off-road-oriented vehicles

They're less common on newer half-ton and three-quarter-ton trucks, which have largely moved to Load Range E as payloads have increased.

The Gap Between the Rating and Your Setup

Load Range C gives you a defined capacity ceiling — but whether that ceiling is appropriate for your specific vehicle, load, towing setup, and driving conditions isn't something a tire spec alone can answer. Your vehicle's door placard, owner's manual, and the tire placard mounted near the driver's door list the minimum load range and inflation pressure the manufacturer has specified. Those numbers account for your vehicle's actual weight distribution, suspension design, and rated payload — not a generic calculation.

The rating system tells you what a tire can handle under controlled conditions. Whether your actual loaded vehicle stays within that range depends on details only you — and your vehicle's documentation — can confirm.