BS ISO 16992:2018 pdf download.Passenger car tyres — Spare unit substitutive equipment (SUSE)
1 Scope
This document describes spare unit substitutive equipment (SUSE) for passenger car tyres, which is designed to enable users to continue their journey (with or without a stop) in a reasonably safe manner. NOTE 1 Certain equipment becomes effective automatically, thus avoiding the need to stop the vehicle immediately for inspection and corrective action. This document is intended only to qualify the performance of SUSE systems. Its specifications only apply to SUSE systems that can permit the extended mobility of the vehicle. NOTE 2 Other types of SUSE are described in Annexes A and B. The specifications in this document apply from the moment the SUSE system becomes effective, with the driver continuing to control the vehicle (in terms of speed and direction) in an attempt to reach an appropriate place for servicing.
The following are within the scope of this document:
— the description of the various types of SUSE;
— the description and performance levels of complete SUSE systems.
NOTE 3 The performance level that the user reasonably has the right to expect, as well as the restrictive conditions placed upon that level, can vary to a large degree depending on the equipment installed and on the real operating conditions of the tyre in flat-tyre running mode.
The following are outside the scope of this document:
— the vehicle to be equipped;
— the tyre while operating in inflated mode;
— the characteristics of the pressure survey device and of the warning function relative to the inflated mode or to the partially deflated mode due to slow pressure losses;
— the transitory phase, if any, before the equipment becomes effective;
— the inspection, assessment, and the servicing of the SUSE system, after it has been activated in flat
tyre running mode.
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 (all parts), Passenger car tyres and rims
ISO 10191, Passenger car tyres — Verifying tyre capabilities — Laboratory test methods
5 Conformance
5.1 When in inflated mode, and therefore functionally efficient, a tyre that is part of a SUSE shall conform in all respects to the usual criteria of a tyre that can only be used in an inflated state, normal tyre load, i.e. it shall conform to ISO 4000 (all parts) and to ISO 10191, and it shall be similarly maintained. The user shall therefore continue to comply with all recommendations of the tyre manufacturer, or the vehicle manufacturer, or both, as for a tyre. In particular, the cold inflation pressure of each tyre shall be regularly checked. This check is necessary to ensure that it is at least adequate for the intended service (position, load, speed, camber, etc.) and that it conforms to the specifications of the tyre manufacturer, or the vehicle manufacturer, or both.
BS ISO 16992:2018 pdf download
