BS ISO 4223-1:2017 pdf download

BS ISO 4223-1:2017 pdf download.Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres
1 Scope
This document defines a number of significant terms related to pneumatic tyres used in the tyre industry, together with corresponding codes, symbols and values.
NOTE 1 For other terms used in this field and their equivalents in other languages, see ISO 3877 (all parts).
For terms and definitions relating to wheels/rims, see ISO 3911.
NOTE 2 Annex A forms a normative part of this document.
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 4251‑4, Tyres (ply rating marked series) and rims for agricultural tractors and machines — Part 4:Tyre classification and nomenclature
3 Terms, definitions and symbols
For the purposes of this document, the terms, definitions and symbols given in ISO 4251‑4 and the following 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 http://www.iso.org/obp
3.1 Terms relating to category of use
3.1.1 normal tyre
tyre intended for highway (or public highway) use which does not require “M+S” (or other variations) or severe snow or special use (3.1.2) tyre designations
Note 1 to entry: Examples of special use tyre designations are MPT, ML (3.7.1.1.16), POR.
3.1.2 special use
tyre intended for mixed use both on‑ and off‑road or for other special duty and primarily designed to initiate and maintain the vehicle in motion in off‑road conditions
3.1.3 snow tyre
tyre whose tread (3.5.4) pattern, tread compound or structure (3.4.1) is primarily designed to achieve in winter conditions, e.g. snow, a performance better than that of a normal tyre (3.1.1) with regard to its ability to initiate or maintain vehicle motion
Note 1 to entry: It is dentified by a combination of the letters “M” and “S”, e.g. M+S, M&S.
3.1.4 temporary-use spare tyre
tyre different from a tyre intended to be fitted to any vehicle for normal driving conditions but intended only for temporary use under restricted driving conditions
3.1.5 severe snow use tyre
tyre whose tread (3.5.4) pattern, tread compound or structure (3.4.1) is specifically designed based on performance testing using ISO 18106 and which is identified by an “Alpine” or “3 Peak Mountain Snow Flake (3PMSF)” symbol
Note 1 to entry: Refer to regional standards and regulatory requirements for dimensions and performance criteria, placement adjacent to “M+S” and characterized by the 3 Peak Mountain Snow Flake (3PMSF) symbol (see Figure 1).