EN 16662-1:2020

Road vehicles - Supplementary grip devices for tyres of passenger cars and light duty vehicles - Part 1: General safety and performance requirements

This document provides specifications for safety, quality and performance requirements for supplementary grip devices, commonly called "SGDs", for type - approved tyres according to the current legislation, intended to be fitted on tyres on vehicles in categories M1, N1, O1, O2 and relevant sub-categories (off road vehicles).
The requirements contained in this document apply to all SGDs, regardless of the material/technology used to build it.
In case there are available standards for the specific technology of the device, they are intended to be used in conjunction with this document.
In case no standard is available for the specific technology, this document applies.

Straßenfahrzeuge - Zusätzliche Gleitschutzvorrichtungen für Reifen an Personenfahrzeugen und leichten Nutzfahrzeugen - Teil 1: Sicherheitstechnische Anforderungen und Prüfverfahren

Dieses Dokument enthält Festlegungen für Sicherheits-, Qualitäts- und Leistungsanforderungen an zusätzliche Gleitschutzvorrichtungen, im Allgemeinen als "SGD"(en: supplementary grip devices) bezeichnet, für nach der geltenden Gesetzgebung zugelassene Reifen, die für die Befestigung an Reifen von Fahrzeugen der Klassen M1, N1, O1, O2 und entsprechender Unterkategorien (Geländefahrzeuge) vorgesehen sind.
Die im vorliegenden Dokument enthaltenen Anforderungen gelten für alle SGD, unabhängig von Material/Technologie zur Herstellung.
Falls es anwendbare Normen für die spezifische Technologie des Geräts gibt, sind diese zur gemeinsamen Anwendung mit dem vorliegenden Dokument vorgesehen.
Falls keine Norm für die spezifische Technologie verfügbar ist, gilt das vorliegende Dokument.

Véhicules routiers - Dispositifs supplémentaires d'adhérence pour pneumatiques de véhicules particuliers et de véhicules utilitaires légers - Partie 1 : Exigences générales de sécurité et de performance

Le présent document spécifie les exigences de sécurité, de qualité et de performance des dispositifs de renfort d’adhérence, couramment appelés « SGD », pour pneumatiques homologués conformément à la législation en vigueur, destinés à être montés sur les pneumatiques de véhicules de catégories M1, N1, O1, O2 et les sous-catégories pertinentes (véhicules hors route).
Les exigences du présent document s’appliquent à tous les SGD, quel que soit le matériau/la technologie utilisé pour les réaliser.
Si des normes sont disponibles pour la technologie spécifique du dispositif, elles sont destinées à être utilisées conjointement avec le présent document.
Si aucune norme n’est disponible pour la technologie spécifique, le présent document s’applique.

Cestna vozila - Dodatne naprave za oprijem pnevmatik na osebnih in lahkih tovornih vozilih - 1. del: Splošne varnostne in zahtevane lastnosti

General Information

• Status: Published
• Publication Date: 26-May-2020
• Withdrawal Date: 29-Nov-2020
• ICS: 83.160.10 - Road vehicle tyres
• Technical Committee: CEN/TC 301 - Electrically propelled road vehicles
• Drafting Committee: CEN/TC 301/WG 7 - Supplementary grip devices
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2025
• Completion Date: 02-Dec-2025
• Ref Project: SIST EN 16662-1:2020 - Road vehicles - Supplementary grip devices for tyres of passenger cars and light duty vehicles - Part 1 : General safety and performance requirements

Overview

EN 16662-1:2020 - published by CEN - specifies general safety and performance requirements for supplementary grip devices (SGDs) fitted to tyres of passenger cars and light-duty vehicles (categories M1, N1, O1, O2 and relevant sub-categories). The standard covers design, construction, testing, marking and documentation for SGDs regardless of material or technology, and is intended to be used alongside any technology-specific standards where they exist.

Key topics and technical requirements

• Scope and applicability: Applies to SGDs for type‑approved tyres; devices built from any material or technology.
• Design and fitment: SGDs must adapt to tyre dimensions, allow tyre deformation, and leave no more than 1/8 wheel circumference without SGD coverage after fitting.
• Static envelope limits: Maximum additional envelope when fitted - 20 mm internal, 20 mm on tyre tread, 25 mm external (with a special 30 mm envelope class defined in Annex B).
• Performance limits: Maximum permitted driving speed when using SGDs is 50 km/h.
• Durability and safety tests:
  • Wear resistance (laboratory track tests).
  • Dynamic lifting to verify elements do not detach or create hazards.
  • General behaviour on road (ice and snow track tests, braking, handling).
  • Comparison tests against a defined reference SGD (Annex A) on both normal and snow tyres.
• Acceptance criteria: Efficiency of a sample SGD must be at least 80% of the reference SGD; each individual measurement must not be lower than 70% of the reference average.
• Marking and documentation: Mandatory markings on packaging and device, plus a use and maintenance booklet with safety and fitting instructions.
• Test validity: Statistical repeatability requirements (standard deviation ≤ 20%); tests should be performed in accredited labs (EN ISO/IEC 17025 recommended).

Practical applications and users

This standard is essential guidance for:

• SGD manufacturers - product design, materials selection, durability and safety compliance.
• Test laboratories and certification bodies - test methods, acceptance criteria, and reporting.
• Tyre and vehicle manufacturers - integration and compatibility checks with tyres and vehicles.
• Regulators, procurement teams and distributors - product evaluation, market surveillance and labeling requirements.
• Automotive aftermarket and installers - correct fitting instructions and consumer safety information.

Related standards

• ISO 4000‑1 (referenced tyre dimensions)
• UN R117 (3PMSF / snow tyre definitions) and any technology‑specific standards for particular SGD types - EN 16662-1:2020 is to be used in conjunction with those where available.

Keywords: EN 16662-1:2020, supplementary grip devices, SGDs, tyre safety, performance requirements, CEN, snow chains, wear resistance, dynamic lifting, reference SGD.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2020
Cestna vozila - Dodatne naprave za oprijem pnevmatik na osebnih in lahkih
tovornih vozilih - 1. del: Splošne varnostne in zahtevane lastnosti
Road vehicles - Supplementary grip devices for tyres of passenger cars and light duty
vehicles - Part 1 : General safety and performance requirements
Straßenfahrzeuge - Zusätzliche Gleitschutzvorrichtungen für Reifen an
Personenfahrzeugen und leichten Nutzfahrzeugen - Teil 1: Sicherheitstechnische
Anforderungen und Prüfverfahren
Véhicules routiers - Dispositifs supplémentaires d'adhérence pour pneumatiques de
véhicules particuliers et de véhicules utilitaires légers - Partie 1 : Exigences générales de
sécurité et de performance
Ta slovenski standard je istoveten z: EN 16662-1:2020
ICS:
83.160.10 Pnevmatike za cestna vozila Road vehicle tyres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16662-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2020
EUROPÄISCHE NORM
ICS 83.160.10
English Version
Road vehicles - Supplementary grip devices for tyres of
passenger cars and light duty vehicles - Part 1: General
safety and performance requirements
Véhicules routiers - Dispositifs supplémentaires Straßenfahrzeuge - Zusätzliche
d'adhérence pour pneumatiques de véhicules Gleitschutzvorrichtungen für Reifen an
particuliers et de véhicules utilitaires légers - Partie 1 : Personenfahrzeugen und leichten Nutzfahrzeugen -
Exigences générales de sécurité et de performance Teil 1: Sicherheitstechnische Anforderungen und
Prüfverfahren
This European Standard was approved by CEN on 20 April 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16662-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 6
4.1 General provisions . 6
4.2 Wear Resistance . 7
4.3 Protection against environmental agents . 7
4.4 Dynamic liftting . 7
4.5 General behaviour on the road . 7
4.6 Effectiveness during the use . 7
4.7 Comparison tests . 8
4.8 Validity of the test . 8
4.9 Acceptance criteria . 8
5 Test methods . 9
5.1 General . 9
5.2 Test on a track . 9
6 Marking . 13
6.1 Indications on the packaging . 13
6.2 Marking on the SGD . 13
7 Use and maintenance booklet . 14
Annex A (normative) Reference SGD . 15
Annex B (normative) Envelope classes . 18
Bibliography . 20

European foreword
This document (EN 16662-1:2020) has been prepared by Technical Committee CEN/TC 301 “Road
Vehicles”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2020, and conflicting national standards shall
be withdrawn at the latest by November 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document provides specifications for safety, quality and performance requirements for
supplementary grip devices, commonly called “SGDs”, for type – approved tyres according to the current
legislation, intended to be fitted on tyres on vehicles in categories M1, N1, O1, O and relevant sub-
categories (off road vehicles).
The requirements contained in this document apply to all SGDs, regardless of the material/technology
used to build it.
In case there are available standards for the specific technology of the device, they are intended to be
used in conjunction with this document.
In case no standard is available for the specific technology, this document applies.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4000-1, Passenger car tyres and rims — Part 1: Tyres (metric series)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/
3.1
Supplementary Grip Device
SGD
device for the increasing of force transmission, in particular on snow and ice
Note 1 to entry: If not differently specified, this term identifies the Sample SGD.
3.2
tyre tread
part of the tyre directly in contact with the road surface
3.3
SGD tread surface
elements of the SGD between the tyre tread and the road surface
3.4
product hazard
defects implying a not acceptable loss of safety
Note 1 to entry: These hazards may occur through e.g. holes, breakages, SGD falling off the tyre, etc.
Note 2 to entry: Safety risks need to be defined in the SGD manual.
3.5
SGD type
SGD group having common physical characteristics and structure
Note 1 to entry: Common characteristics mean i.e. geometry, material. Size of a SGD type may vary.
3.6
sample SGD
SGD to be tested
3.7
reference SGD
SGD used as a basis for evaluating all other types of sample SGDs during the comparison tests
Note 1 to entry: the reference SGD is defined in Annex A.
3.8
fabric material
material composed by textile fibers
3.9
fabric SGD
SGD whose tread surface is in majority composed by fabric material
3.10
non-metallic net SGD
SGD forming a net pattern, whose tread surface is in majority composed by non-metallic materials
3.11
metallic SGD
SGD whose tread surface is in majority composed by metallic components
3.12
hybrid SGD
SGD whose tread surface combines either several materials and/or several technologies
EXAMPLE Automatic snow chains are considered to be an alternative technology.
3.13
variation of geometry
visually recognizable modification of at least one of the elements of the SGD
3.14
efficiency
rate between the average values obtained with the sample SGD and the reference SGD
3.15
producer
manufacturer, entity or organization that has the legal responsibility for placing the product on the
market
Note 1 to entry: Legal reference from the European Directive 2001/95/EC Art 2(e).
3.16
snow tyres
tyres corresponding to the category SEVERE SNOW according to UN R117, with 3PMSF logo on sidewall
(Alpin logo)
3.17
normal tyres
tyres without M+S and 3PMSF logo on their sidewalls
4 Requirements
4.1 General provisions
4.1.1 Size
The size of the SGD shall correspond to the tyre size list supplied by the SGD producer.
4.1.2 Adaptability
The SGDs shall be adjustable to the shape and dimension of the tyres for which they are intended.
4.1.3 Design
After mounting and tensioning the SGD, no more than 1/8 of the wheel circumference may remain SGD-
free in any part of the tyre tread.
4.1.4 Static envelope
With vehicle stopped, the additional envelope of the SGD fitted on the tyre shall not be greater than:
— 20 mm on the internal side;
— 20 mm on the tyre tread;
— 25 mm on the external side (restricted to the tyre zone);
— 30 mm (only in case of Envelope Class 30, on internal, external and tyre tread side).
Concerning the envelopes on both the tyre tread and the internal side, the producer shall indicate, for
each SGD type, the appropriate envelope class among those defined in Annex B. In this case, for the
affiliation class of the type, all the dimensions mentioned in Table B.1 shall not be exceeded.
4.1.5 Construction and materials
The SGDs shall be built:
— in order to resist to the usage requirements (e.g.: different road surfaces, different vehicles having
different mass, etc);
— in a way that both snow and ice eventually caught inside the device will not affect its performance
and safety requirements.
In addition, all the elements setting up a SGD:
— shall be articulated among one another in order to permit to the adaption of the SGD to the tyre
deformation during the rolling process. The relative movement between the tyre and the SGD shall
be guaranteed;
— shall not cause any damage to the tyre during normal use as a result of their conformation;
— those permitting, the fitting on the tyre tread shall be shaped in order to achieve the grip on snow
and ice without impairing the behaviour of the vehicle;
— shall permit an increase of adherence both on the longitudinal axis (i.e: hill starting ability, braking)
and on the lateral axis (i.e: road holding in a turn), so to guarantee the necessary safety level to the
vehicle while driving on snowy or/and icy roads.
The side panel/tensioning system of the SGD part shall be connected to each other when mounted, in
such a way that loosening under the occurring loads and movements is prevented.
The tyre tread parts shall be delivered as pre-assembled elements.
Fine-adjustments of the elements is allowed. The adjustment procedure shall be indicated in the
instruction manual.
4.1.6 Fitting
The SGDs shall be installable in such a way that they do not slip off during the use, and shall be installed
on the tyre by following the indications contained in the use and maintenance booklet.
The functioning of the tensioning and/or fitting means shall be guaranteed in order to limit the dynamic
lifting, and shall be effective in every condition of use.
In addition, the SGD shall not damage any part of the vehicle.
4.1.7 Driving speed
The maximum driving speed allowed while using a SGD is 50 km/h
4.2 Wear Resistance
The SGD shall be submitted to a wear resistance test as described in 5.2.5.5.
4.3 Protection against environmental agents
The materials used to build the SGD shall not decrease their mechanical properties as a reaction to
environmental agents during the lifetime of the product defined by the SGD producer.
NOTE Environmental agents can include e.g. sand, salt, radiation, biological, chemicals, etc.
4.4 Dynamic liftting
The SGD shall be submitted to the dynamic lifting test described in 5.2.4.
4.5 General behaviour on the road
The SGD shall be submitted to the tests described in 5.2.
Both during the performance test as well as when used as intended, the SGD shall not:
— cause any visible damage to the tyre or the vehicle;
— slip off the wheel.
4.6 Effectiveness during the use
Considering the high variability of the SGD use conditions (i.e.: power, type, weights distribution and
wheel dimensions of the car, as well as weather and road conditions), the efficiency of the SGD shall be
measured comparing the results of tests carried out with a reference SGD.
The characteristics of the reference SGD are written in Annex A.
4.7 Comparison tests
The comparison tests shall be performed by mounting the SGD on the driven-axle.
A new SGD shall be submitted to the following comparison tests:
— test on ice-covered track (see 5.2.6);
— test on snow-covered track (see 5.2.7).
The new SGD shall be compared with the reference SGD.
The SGD shall be tested on both normal and snow tyres. The test should be run mounting the SGD on the
normal tyres first.
The number of SGDs to be used for this test shall be as shown in Table 1.
Table 1 — Number of SGDs to be used for the comparison test
Laboratory test 1 pair
Performance
circle track test
1 pair
emergency braking test
high speed
Wear resistance test 1 pair
One spare pair shall be available.
4.8 Validity of the test
For each one of the tests mentioned in 4.7, the standard deviation of the values measured for both the
sample SGD and the reference SGD, should not be greater than 20 %.
In case this criterion is not fulfilled, the whole series of measurements shall be repeated completely.
The results shall be validated using a SGD mounted on both snow and normal tyres.
The SGD shall remain fitted onto the tyre in its working configuration (as stated by the producer in the
use and maintenance booklet) during the road tests.
4.9 Acceptance criteria
For each one of the tests mentioned in 4.7, the efficiency shall not be lower than 80 % of the reference
SGD.
In addition, the value of every single measurement obtained with the sample SGD shall not be lower than
the 70 % of the average value obtained with the reference SGD. If the minimum value of 70 % is not
reached while measuring, it is allowed to re
...