BS ISO 10191:2021 pdf download – Passenger car tyres — Verifying tyre capabilities — Laboratory test methods This document specifies test methods for verifying the capabilities of tyres for passenger cars. Of the test methods presented, it is possible that only some will be required depending on the construction of the tyre (diagonal, bias-belted, radial or T-type construction) to be tested. The tests are carried out in a laboratory under controlled conditions. This document includes endurance tests, a low-pressure performance test, high-speed tests and requirements for bead unseating and tyre strength. The test methods presented in this document are not intended for gradation of tyre performance or quality levels. This document applies to all passenger car tyres. 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 4223-1:2017, Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres ASTM F414-15, Standard Test Method for Energy Absorbed by a Tire When Deformed by Slow- Moving Plunger ASTM F2663-15, Standard Test Method for Bead Unseating of Tubeless Passenger and Light Truck Tires 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 4223-1:2017 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 3.1 bead separation breakdown of bond between components in the bead area [SOURCE: ISO 4223-1:2017, 3.8.1] 3.2 belt separation parting of rubber compound between belt layers or between belts and plies [SOURCE: ISO 4223-1:2017, 3.8.2] 4 Test equipment and conditions 4.1 Test drum, cylindrical driven flywheel (drum) having a diameter of 1,7 m ± 1 % or 2,0 m ± 1 %. The surface of the drum shall be smooth steel. For the endurance test and low-pressure performance test according to 7.1, the drum may be coated with a thin layer of non-stick material, e.g. polytetrafluoroethylene (PTFE), to eliminate parasitic tread block chunking (PTBC), provided that the total drum diameter remains within above limits. The width of the test surface and, if applicable, the width of the thin layer of the non-stick material shall be...
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