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04/05/2017
TIRES: NATIONAL REGULATIONS UNI 10587, UNI 10588, UNI 11061 AND UNI 11652

Recently published, the national standards UNI 10587, UNI 10588, UNI 11061 and UNI 11652 on tires, are managed by the Technical Committee for Automotive Standardization (CUNA) in compliance with the rules on technical uniformity and recommendations made at European level by tire and motor vehicle manufacturers for correct use and road safety

Donaldo Labò

The Italian National Unification Board (UNI) - recognized by both the State and the European Union, studies, approves, publishes and disseminates technical standards, and represents Italy among European (CEN) and World (ISO) standardization authorities.

 

According to the European Directive 98/34/EC, the technical standard is a "technical specification approved by an organization recognized to undertake regulatory activities, for repeated or continuous application, the compliance of which is not compulsory and belongs to one of the following categories: international, European and National standard".

 

UNI standards are documents that, after being processed by mutual consent by the representatives of all  interested parties through a process of self-regulation, define the "state of the art" of products, processes and services; in other words they show "how to do things right" ensuring safety and performance, and providing operators with clear references even at a contractual level.

                                                                                               

The line separating technical standardization and legislation is thin indeed. When referred to in legislative measures they are not only binding but become the benchmark to be followed by all operators in the sector, as well as responsible bodies in terms of safety and responsibilities.

Recently published, the national standards UNI 10587, UNI 10588, UNI 11061 and UNI 11652 on tires, are managed by the Technical Committee for Automotive Standardization (CUNA) in compliance with the rules on technical uniformity and recommendations made at European level by tire and motor vehicle manufacturers for correct use and road safety.

UNI 10587:2016 "Tires for motor vehicles and trailers, with a total laden mass not exceeding 3.5 t - Requirements and instructions for proper use and maintenance”

 

UNI 10588:2016 "Tires for commercial vehicles and trailers - Requirements and instructions for proper use and maintenance”

UNI 11061:2016 “Instructions for proper storage of tires, inner tubes and rim protectors”

UNI 11652:2016 "Car and motorcycle tests on roller benches - Requirements for tires"

 

The UNI 10587:2016, which replaces the one dated 2003, applies to tires for passenger cars, buses, trucks, special vehicles, motor homes, trailers, bogies and quads, with a total weight up to 3.5 t. It also sets the requirements and instructions aimed at ensuring optimum performance by means of a correct use and proper maintenance.

Here are the main chapters:

- replacement, taking into consideration size, the various structures, the use of special spare tires for temporary use, inner tubes and valves;

- inflation pressure, with air and nitrogen, and the warnings for the different conditions of use;

- the condition of the tread, the minimum tread depth allowed, tire Exchange, etc.;

- maintenance, with the necessary warnings on monitoring the condition of use, wear and tear, tire repair procedures, the type of wear;

- tubeless tires, self supporting or run-flat;

- winter use: M+S tires, studded tires, additional components (snow chains);

- mounting and demounting;

- used tires.

It further highlights that the necessary interventions on tires, from removing the tire for a check-up as a result of a collision, or repairing it – in compliance with current legislation and the instructions supplied by manufacturers of both tires and materials - must be performed by specialists only, and fall under their responsibility.

The definition of specialist: "a person qualified to perform a specific operation in an endeavor duly licensed  to engage in such operations".

 

UNI 10588, which replaces the one dated 2005, applies to tires for commercial vehicles and trailers (total mass exceeding 3.5 tons). It provides requirements and instructions designed to ensure the performance of the tires by means of a correct use and a proper maintenance, and criteria for their replacement. The outline of the chapters is similar to UNI 10587.

 

UNI 11061, which replaces the one dated 2003, provides instructions designed to ensure a correct storage of the tires, inner tubes and rim protectors (flaps).

 

UNI 11652 is intended to alert roller bench users on the damage that can be caused to both passenger cars and motorcycle tires. Placing a tire on contiguous rollers in rotation constitutes an abnormal condition of use for the tire, which cannot be correlated to the normal conditions of use. It is therefore necessary to give warnings and point out limitations to be adopted on various types of benches: power benches, brake testers, end-of-line test benches.

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