What is load index 129?

Load index 129 means one tire is rated to carry 1850 kg, which is 4079 lb, at the inflation pressure the standard specifies for its load range.

How much can four tires with load index 129 carry?

7400 kg (16314 lb) between them, if every tire is correctly inflated. That figure does not raise the vehicle's own gross weight rating, which is usually the lower limit and the one that governs.

Is load index 129 enough for my vehicle?

This site cannot answer that. The vehicle placard in the driver's door jamb states the load index the vehicle was built around, and a replacement has to meet or exceed it. That placard is the authority, not a table.

Load index 129

One tire rated at load index 129 carries 1850 kg, which is 4079 lb. Four of them carry 7400 kg (16314 lb) between them.

A load index is the capacity of one tire at the inflation pressure the standard specifies for that rating, on a correctly sized rim, on a sound and undamaged tire. It is not a capacity at any pressure you choose, and it is not a licence to load a vehicle past its own axle and gross weight ratings.

Per tire: 1850 kg
Per tire: 4079 lb
Sources: 2

What load index 129 works out to

Load index 129 in several forms
Situation	Kilograms	Pounds
One tire	1850	4079
One axle (two tires)	3700	8157
Set of four	7400	16314
One tire, P-metric or Euro-metric fitted to a light truck (divided by 1.1)	1681.8	3708

A P-metric or Euro-metric tire fitted to a light truck, van, SUV or trailer carries less than its load index states. Divide the rated load by 1.1. An LT tire of the same nominal size is not derated, which is why an LT size and a P size that look alike are not interchangeable at rated load.

A tire rated for dual (twinned) fitment prints two load indices, for example 121/118S. The first applies when one tire is mounted per hub, the second when two are. Look the second index up in this table rather than working out a percentage - the printed pair is the rating, and any percentage is a description of it.

Indices either side

Load indices near 129
Index	Kilograms	Pounds	Difference from 129
126	1700	3748	-150 kg
127	1750	3858	-100 kg
128	1800	3968	-50 kg
130	1900	4189	+50 kg
131	1950	4299	+100 kg
132	2000	4409	+150 kg

Questions about load index 129

What is load index 129?: Load index 129 means one tire is rated to carry 1850 kg, which is 4079 lb, at the inflation pressure the standard specifies for its load range.
How much can four tires with load index 129 carry?: 7400 kg (16314 lb) between them, if every tire is correctly inflated. That figure does not raise the vehicle's own gross weight rating, which is usually the lower limit and the one that governs.
Is load index 129 enough for my vehicle?: This site cannot answer that. The vehicle placard in the driver's door jamb states the load index the vehicle was built around, and a replacement has to meet or exceed it. That placard is the authority, not a table.

Where these figures come from

Computed on this page, not looked up. Each figure and the arithmetic behind it:

Pounds pounds = kilograms x 2.20462262185, rounded to the nearest pound
Light truck derating rated load / 1.1, for a P-metric or Euro-metric tire on a light truck

Published values here were read from 2 independent sources:

Tyre Load Index Chart (LI 0-150) - AmesWeb, states ETRTO and SAE tables as the basis (read 2026-08-27)
Load index 0 to 150, kilograms
Tire Load Rating Chart - Your Auto Vision, page dated 21 April 2026 (read 2026-08-27)
Load index 0 to 150, kilograms and pounds; load range letters

These are independent publishers, not independent measurements. Each one reproduces a table originally set by a standards body, so agreement between them shows a value was transcribed correctly, not that the underlying table is right. Where a figure is safety relevant, check it against the tire manufacturer's own data before relying on it.