Look up tire load index numbers to find the maximum weight capacity per tire and total vehicle load. Verify your tires can handle your vehicle's weight.
The tire load index is a numerical code on every tire's sidewall that indicates the maximum weight each tire can carry when properly inflated. It appears in the service description alongside the speed rating — for example, in 225/50R17 94V, the number 94 is the load index.
Load index values range from about 70 (739 lbs) for small car tires to 126 (3,748 lbs) for heavy truck tires. The total vehicle load capacity equals the per-tire load times four (for a standard 4-wheel vehicle).
Choosing tires with an adequate load index is essential for safety. Overloaded tires overheat, wear prematurely, and are at risk of sudden blowouts. Always match or exceed the load index specified by your vehicle manufacturer.
Whether you drive a compact sedan, a full-size SUV, or a pickup truck, accurate tire load index figures help you plan smarter and avoid costly surprises at the pump or dealership. Use this tool regularly to track changes over time and adjust your transportation budget accordingly.
If you tow, haul cargo, or have upgraded wheels, you need to verify your tires can handle the load. This calculator instantly converts any load index number to its weight capacity in pounds and kilograms, and calculates the total 4-tire capacity. Results update instantly as you adjust inputs, making it easy to explore different scenarios and find the best option for your driving needs and budget.
Per Tire Load = Lookup(Load Index) Total Vehicle Capacity = Per Tire Load × 4
Result: 1,477 lbs per tire → 5,908 lbs total
A load index of 94 corresponds to 1,477 lbs (670 kg) per tire. Multiplied by 4 tires, the total load capacity is 5,908 lbs (2,680 kg), suitable for midsize sedans and small SUVs.
Load index 85: 1,135 lbs (compact cars). 91: 1,356 lbs (midsize sedans). 94: 1,477 lbs (crossovers). 100: 1,764 lbs (SUVs). 105: 2,039 lbs (trucks). 110: 2,337 lbs (heavy trucks). 116: 2,756 lbs (commercial). 120: 3,086 lbs (heavy commercial).
Economy cars: 75–85. Midsize sedans: 88–95. SUVs and crossovers: 95–105. Pickup trucks: 105–120. Commercial vans: 112–126. Heavy-duty trucks use Load Range ratings instead.
Your vehicle's GVWR (Gross Vehicle Weight Rating) should not exceed the combined load capacity of all four tires. Subtract the vehicle's curb weight from the total tire capacity to find your maximum payload.
Towing and hauling heavy loads. Switching to aftermarket wheels with different tire sizes. Carrying full passenger loads plus cargo. Driving on hot roads (heat reduces effective load capacity).
Check the tire information placard on your driver's door jamb. It lists the required load index and inflation pressure. Never go below that number. Higher is acceptable and provides a safety margin.
XL (Extra Load) tires are reinforced to carry more weight at higher inflation pressures. They are rated 3–4 load index points higher than standard tires of the same size. SUVs and crossovers often require XL tires.
Load index is a passenger tire standard (a number like 94). Load range is a light truck standard (letters like C, D, E) indicating ply rating and pressure capacity. They measure the same thing — weight capacity — but use different scales.
Yes. The load index rating assumes the tire is inflated to its maximum recommended pressure. Under-inflated tires have reduced load capacity and are at higher risk of failure under heavy loads.
Overloading causes excessive heat buildup, accelerated wear, poor handling, and increased blowout risk. Sustained overloading can cause sudden tire failure, especially at highway speeds.
On standard vehicles, yes. Some trucks with staggered sizes may have a higher rear load index for cargo. Always follow manufacturer specifications. Mismatched load ratings can cause handling imbalances.