Load index to pounds
Convert the load index number to per-tire capacity in pounds and kilograms, and to a four-tire vehicle total.
Load & speed rating
Look up truck tire load index and speed rating.
Enter a load index or speed rating from the sidewall to see the capacity and maximum speed it stands for.
Summary: This lookup converts a tire's load index to per-tire capacity in pounds and kilograms, and its speed rating letter to a maximum speed, for a Tacoma or any truck tire.
Updated
What load index does a Tacoma need? (load index chart)
Toyota engineers the Tacoma for tires with load index 109 or higher, which is 2,271 lb per tire; a 265/70R17 OE tire is roughly load index 115 (2,679 lb). The chart converts load indexes 104-126 to pounds and kilograms per tire from the same table as the lookup below, and the load range table shows what SL, XL, C, D, and E mean. Whatever load range you buy, match or beat the load index on your door placard.
| Load index | Per tire (lb) | Per tire (kg) | 4 tires combined (lb) | Vs. Tacoma 109 minimum |
|---|---|---|---|---|
| 104 | 1,984 lb | 900 kg | 7,937 lb | Below 109 minimum |
| 105 | 2,039 lb | 925 kg | 8,157 lb | Below 109 minimum |
| 106 | 2,094 lb | 950 kg | 8,378 lb | Below 109 minimum |
| 107 | 2,150 lb | 975 kg | 8,598 lb | Below 109 minimum |
| 108 | 2,205 lb | 1,000 kg | 8,818 lb | Below 109 minimum |
| 109 | 2,271 lb | 1,030 kg | 9,083 lb | Tacoma minimum |
| 110 | 2,337 lb | 1,060 kg | 9,348 lb | Above minimum |
| 111 | 2,403 lb | 1,090 kg | 9,612 lb | Above minimum |
| 112 | 2,469 lb | 1,120 kg | 9,877 lb | Above minimum |
| 113 | 2,535 lb | 1,150 kg | 10,141 lb | Above minimum |
| 114 | 2,601 lb | 1,180 kg | 10,406 lb | Above minimum |
| 115 | 2,679 lb | 1,215 kg | 10,714 lb | Above minimum (typical 265/70R17 OE) |
| 116 | 2,756 lb | 1,250 kg | 11,023 lb | Above minimum |
| 117 | 2,833 lb | 1,285 kg | 11,332 lb | Above minimum |
| 118 | 2,910 lb | 1,320 kg | 11,640 lb | Above minimum |
| 119 | 2,998 lb | 1,360 kg | 11,993 lb | Above minimum |
| 120 | 3,086 lb | 1,400 kg | 12,346 lb | Above minimum |
| 121 | 3,197 lb | 1,450 kg | 12,787 lb | Above minimum |
| 122 | 3,307 lb | 1,500 kg | 13,228 lb | Above minimum |
| 123 | 3,417 lb | 1,550 kg | 13,669 lb | Above minimum |
| 124 | 3,527 lb | 1,600 kg | 14,110 lb | Above minimum |
| 125 | 3,638 lb | 1,650 kg | 14,551 lb | Above minimum |
| 126 | 3,748 lb | 1,700 kg | 14,991 lb | Above minimum |
How do I read this chart?
- Load index is the most one tire can carry when inflated to its max load pressure. At lower pressure it carries less.
- The four-tire total is tire capacity, not truck payload. The GVWR and axle ratings on the door placard still set the limit.
- Load range (SL, XL, C, D, E) is the casing construction and pressure ceiling; load index is the actual pounds. Compare tires by load index.
- Toyota engineers the Tacoma for tires with load index 109 or higher (2,271 lb per tire). A 265/70R17 OE tire is roughly load index 115 (2,679 lb). OE speed rating is usually S, T, or H.
What do load ranges SL, XL, C, D, and E mean?
| Load range | Type | Ply rating | Max load pressure | Notes |
|---|---|---|---|---|
| SL | Standard Load | ~4 ply | 35 psi | Factory Tacoma fitment. Softest ride, best MPG. P-metric derated 10% on a truck. |
| XL | Extra Load | reinforced | 41 psi | Reinforced passenger tire. A bit more capacity than SL. |
| C | Load Range C | 6 ply | 50 psi | Light LT. Middle ground for mild overland weight. |
| D | Load Range D | 8 ply | 65 psi | Heavier LT. Common in aggressive A/T and M/T sizes. |
| E | Load Range E | 10 ply | 80 psi | Towing 5,000 lb+, heavy overland, rocky trails. Heavier, stiffer, ~1-2 mpg cost. |
Max load pressure is the inflation for the tire's rated load, not a daily setting. Set pressure from the door placard or a load-inflation table for your measured axle weights.
What top speed does each speed rating allow?
| Speed rating | Max mph | Max km/h |
|---|---|---|
| L | 75 mph | 120 km/h |
| M | 81 mph | 130 km/h |
| N | 87 mph | 140 km/h |
| P | 93 mph | 150 km/h |
| Q | 99 mph | 160 km/h |
| R | 106 mph | 170 km/h |
| S | 112 mph | 180 km/h |
| T | 118 mph | 190 km/h |
| U | 124 mph | 200 km/h |
| H | 130 mph | 210 km/h |
| V | 149 mph | 240 km/h |
| W | 168 mph | 270 km/h |
| Y | 186 mph | 300 km/h |
Look up any sidewall code with the Load Index and Speed Rating Lookup below. Related: Load range E vs SL on a Tacoma · Tire pressure calculator.
How does this load index and speed rating lookup work?
The service description at the end of a tire size, like the 115T in 265/70R17 115T, is two codes: a load index number for how much weight one tire can carry, and a speed rating letter for the fastest sustained speed it is built for. The lookup turns both into pounds, kilograms, and miles per hour, and checks the load number against what a Tacoma needs, so you can compare a truck tire's sidewall with your door placard.
What do I enter?
- The load index from the sidewall (60-130). An LT tire shows two numbers, such as 121/118; the first is the single-wheel rating that applies on a Tacoma.
- The speed rating letter, from L (75 mph) to Y (186 mph).
What does it show?
- Maximum load per tire in pounds and kilograms, and the four-tire total.
- The speed rating's maximum sustained speed in mph and km/h.
- A reference list of every speed rating letter.
What does 115T mean on a Tacoma tire?
A 115T code is load index 115 and speed rating T. Load index 115 is 2,679 lb (1,215 kg) per tire at its max load pressure, 10,714 lb across four. That clears the Tacoma's load index 109 floor (2,271 lb) by 408 lb per tire. Speed rating T is good for 118 mph (190 km/h) sustained.
Moving from 265/70R17 to 285/70R17 does not change any of this: the bigger size is not automatically a stronger tire. Read the new tire's own service description and keep its load index at or above the number on your door placard, whatever its load range.
| Code | Means | Value |
|---|---|---|
| 115 | Load index | 2,679 lb / 1,215 kg per tire |
| 115 × 4 | Four-tire capacity | 10,714 lb |
| 109 | Tacoma minimum load index | 2,271 lb per tire |
| T | Speed rating | 118 mph / 190 km/h |
How is it different from a generic calculator?
- Checked against the truck: the chart above shows every load index against the Tacoma's 109 minimum, not just converted to pounds, so an under-rated tire stands out before you buy it.
- Load range kept apart from load index: the load range chart above explains SL, XL, C, D, and E as casing and pressure ceilings, so a 10-ply label is never mistaken for a weight rating.
- Pounds and kilograms from the published load index table, with the four-tire total labeled as tire capacity rather than payload, because the door placard's GVWR and axle ratings still set the truck's limit.
What load index do I need on a midsize pickup truck?
At least the load index on the door placard, and never less than the factory tire. For a Tacoma that floor is 109 (2,271 lb per tire), and a typical 265/70R17 factory tire is about 115. Other midsize trucks set their own minimum on the same placard. Hauling, towing, or overland weight is a reason to go above it, usually with an LT tire run at the pressure a load-inflation table gives for your axle weights.
Related: 265/70R17 on a Tacoma · 285/70R17 on a Tacoma · Tire pressure calculator.
What it does
What does this tool do?
Speed rating
Translate the speed rating letter to its maximum sustained speed in mph and km/h.
Tacoma context
The load index band Toyota specifies for the Tacoma and the OE speed ratings to expect.
Which related tools and guides should I use next?
Where do these numbers come from?
Load index and speed rating are lookups against the standard industry code tables, not calculations. Retailer explainers below describe how load range and load index relate, and the load rating on your own tire's sidewall always decides.
Load Index and Speed Rating Lookup FAQ.
The load index is a coded number for how much weight one tire can carry at full inflation. For example load index 115 is 2,679 lb per tire. Multiply by four for the vehicle total.
Toyota engineers the Tacoma for tires with a load index of 109 or higher, which is 2,271 lb per tire. Staying at or above the door-placard load index keeps the truck within spec.
The speed rating letter is the maximum sustained speed the tire is designed for. Common Tacoma OE ratings are S (112 mph), T (118 mph), and H (130 mph).
Look the number up in a load index chart like the one above. Load index 112 is 2,469 lb per tire and 121 is 3,197 lb, so a set of four rates 9,877 lb or 12,787 lb at the tire's maximum load pressure. That is what the tires can carry, not what the truck may: the door placard's payload and axle ratings still apply on a Tacoma or any midsize pickup.