Tire Advanced Search
BKT
  • Home | 
  • Tire Care & Safety | 
  • Reading your tire

Reading your tire

This section is intended for operators from the agricultural, industrial or earthmoving sectors. It contains useful information about specific Off-Highway tire features as well as some recommendations for maintenance and storage.

The main information about your tire can be found right on the tire. You just need to know how to read it. 

These are the main parameters for measuring a tire:

Overall Diameter - OD 
This parameter is measured after the tire being properly mounted on the reference rim and inflated at the pressure recommended by the manufacturer for at least 24 hours without any load. 

Section Width - SW 
This parameter indicates the outer sidewall distance without taking into consideration the prominences due to tire code marking. The section width is measured after the tire being properly mounted on the reference rim and inflated at the pressure recommended by the manufacturer for at least 24 hours without any load.

Overall Width - OW
This parameter indicates a tire’s section width at its largest point including all prominences such as tire code marking, sidewall lettering, tire brand, etc. The overall width is measured after the tire being properly mounted on the reference rim and inflated at the pressure recommended by the manufacturer for at least 24 hours without any load. 

Section Height – SH
This parameter indicates the vertical section of the tire. It is calculated based on the overall diameter less the rim diameter divided by two. 

Static Loaded Radius - SLR
This parameter indicates the vertical distance between the ground and the tire rotation axis. It is measured with the tire inflated at its nominal pressure, properly mounted on its reference rim at maximum load according to the values defined in the load index.

Static Loaded Width - SLW
This parameter indicates the outer distance between the tire sidewalls. It is measured with the tire inflated at its nominal pressure, properly mounted on its reference rim at maximum load according to the values defined in the load index.

Load Index
The load index is a numeric code that defines the tire´s maximum loading capacity in kg. For each tire type/size, the loading capacity is always related to a specific inflation pressure as defined by ETRTO standards and manufacturer specifications.

Speed Code
The speed code is a symbol that indicates the maximum speed admitted at the given load index, following any other specific conditions defined by the tire manufacturer.