These designations identify the environment in which the tyre is used. In some cases product designations will also include an option which expresses an additional benefit of the product to meet the specific needs of the haulier.
The FRT (Free Rolling Tyre) marking is defined in regulation 54: “Marking 3.1.15”.
The inscription “FRT” is applicable for tyres designed specifically for carrying axles (tyres for towed axles).
Tyres with a FRT marking can be fitted to any axle of:
Example of load and speed indices:
A number of truck tyre dimensions have a second load/speed index marked on the sidewall.
This is known as the “Unique Point“ and is located after the main load index (as shown here.)
Example of load and speed indices with a unique point marking:
For these sizes, the “Unique Point“ provides additional load/speed operating conditions in order to satisfy particular requirements.
