The load capacity index of a tyre is one of the most important parameters to consider when buying a new set of tyres. It is crucial for the service life of the tyres, but above all for driving safety. In this article, we have included all the most important information concerning this designation.

car wheelBefore buying new tyres, it is important to verify their performance.

The load capacity index of a tyre is an inconspicuous parameter and is overlooked by many drivers. However, together with the speed index, it is just as important as the size. It does not affect the tyre's ability to be fitted on a rim, but it does play an important role when driving. Therefore, every driver should be familiar with this indicator in order to ensure his or her safety and that of other road users.

What is the load capacity index of tyres?

The load capacity (load index) of a tyre determines the maximum load a tyre can carry, when travelling at the highest speed allowed. The manufacturer determines the maximum load rating for the tyre, taking into account the more heavily loaded axle of the vehicle. It is therefore not difficult to guess that the larger and heavier the vehicle, the higher the load index should be.

load capacity indexThe load capacity index marking is located on the sidewall of the tyre, right next to the speed rating.

Tyre load capacity indexes are expressed by a two- or three-digit number, which can be found on the sidewall of the model. It is located between the size and the speed index designation. For example, on a 205/60 R16 92V tyre, the parameter is 92, which indicates a maximum load capacity of 630 kg. The letter V next to it indicates the speed rating (max. 240 km/h).

As well as knowing what a tyre's load capacity index means, you should also be aware that it always goes hand in hand with a speed index. Both are extremely important for the safety of the car user, so it is worth knowing what they mean in order to choose the right tyres for your car.

Load-capacity index of vehicle tyres

The load capacity index for passenger car tyres generally ranges from 88 to 99; higher values are usually used for SUVs, for which reinforced tyres are often used, e.g. marked with the letters XL. The choice of the right parameter depends primarily on the weight of the vehicle in question, but also on the number of passengers. In cars designed to carry five people, it must be higher than in vehicles with only two seats - for the driver and passenger.

Car tyres on the shelfWhen choosing new tyres, go for models with the characteristics indicated by the car manufacturer.

Load capacity index of motorbike tyre

For motorbikes, the load rating of the tyre depends largely on the vehicle itself. Smaller values are used for scooters or small machines up to 125cc. Slightly different values are also used for choppers, sports models, and enduro bikes. This is due to the differences in construction of the different versions of motorbikes, which affect their weight. It is not difficult to guess that the indexes are lower for motorbikes than for cars, usually ranging from around 200 to around 300 kg.

Motorbike tyres

Load capacity index for light and heavy duty tyres

A significantly higher load capacity index is used when it comes to tyres for vans, let alone trucks, than for cars. For "vans", including buses, additional load index designations are used: XL (Extra Load), C (Commercial), and LT (Light Truck). The permissible weights are usually between approx. 800 and approx. 1,500 kg. 

Truck tyres use the highest indices, in some cases even reaching 3,000-6,000 kg load capacity each. It is worth mentioning, however, that in both cases there is often a double index, e.g. 115/113, in cases where double or twin wheels are used. The first value is then dedicated to cars with single wheels and the second to vehicles with so-called "twins"

Load capacity index - how to choose?

If you plan to buy replacement tyres in a size other than that recommended by the manufacturer, you should choose the car tyre load capacity index provided in the car's manual. There you will find the exact guidelines recommended by the manufacturer. If you do not have the manual, you should also find the tyre information in other places, e.g.: on the fuel filler flap, on the pillar behind the driver, or the inside of the door on the driver's side.

Consequences of fitting tyres with the wrong load capacity index

Remember that under no circumstances should tyres with a lower load capacity index be fitted than those recommended by the manufacturer. This is against the law and therefore has legal consequences. Above all, however, it affects driving safety. Failure to comply with the recommendations may result in:

  • faster tyre wear. Tyres with the wrong load capacity index can wear out more quickly, causing your car maintenance expenses to increase.
  • danger when driving. Too much pressure on the tyre can cause it to blow out, which consequently contributes to accidents.
  • loss of driving stability and reduced driving comfort.
  • liability problems. In the event of a collision or road traffic incident, the insurer may refuse to pay the claim if the car has had tyres fitted that does not comply with the manufacturer's recommendation.
  • Loss of warranty. By fitting products with characteristics that do not correspond to those specified by the manufacturer, you will lose the warranty on the tyres you have purchased.
  • the risk of a financial penalty. During an inspection, a police officer may issue a fine if the                         tyres fitted do not comply with the manufacturer's guidelines.

Popular load capacity index for tyres

It is not difficult to guess that the most common indexes are those used on passenger cars. These are the vehicles you encounter most on the streets. The following indexes are among the most commonly used in them:

  • Load capacity index 88 – 560 kg
  • Load capacity index 91 – 615 kg
  • Load capacity index 94 – 670 kg
  • Load capacity index 95 – 690 kg
  • Load capacity index 98 – 750 kg

Load capacity index - table

You may need tyres with a rare speed rating. However, there are many markings used, which can be confusing. That is why we have prepared a special table in which we list the main indications and the values associated with them.

Load capacity index of tyres- tables

Load capacity index of tyres (tyre marking)Load capacity index of tyres expressed in kilograms
60250
61257
62265
63272
64280
65290
66300
67307
68315
69320
70335
71345
72355
73365
74375
75385
76400
77412
78425
79437
80450
81462
82475
83487
84500
85515
86530
87545
88560
89580
90600
91615
92630
93650
94670
95690
96710
97730
98750
99775
100800
101825
102850
103875
104900
105925
106950
107975
1081000
1091030
1101060
1111090
1121120
1131150
1141180
1151215
1161250
1171285
1181320
1191360
1201400
1211450
1221500
1231550
1241600
1251650
1261700
1271750
1281800
1291850
1301900
1311950
1322000
1332060
1342120
1352180
1362240
1372300
1382360
1392430
1402500
1412575
1422650
1432725
1442800
1452900
1463000
1473075
1483150
1493250
1503350
1513450
1523550
1533650
1543750
1553875
1564000
1574125
1584250
1594375
1604500
1614625
1624750
1634875
1645000
1655150
1665300
1675450
1685600
1695800
1706000