Truck and bus tyres and rims (metric series); part 1: tyres

This document establishes technical specifications for pneumatic tires and rim systems designed for heavy-duty trucks and buses utilizing the metric series. It focuses specifically on the first section, which details the requirements, performance criteria, and designation methods applicable solely to the tires themselves. The text outlines procedures for testing durability, structural integrity, and dimensional accuracy to ensure compatibility with standard rim profiles. Detailed guidelines are provided regarding tire construction, including casing materials, tread patterns, and load-carrying capabilities under various operating conditions. Furthermore, the content defines labeling conventions to facilitate identification and classification during manufacturing and distribution processes. These guidelines aim to harmonize technical parameters across international markets, ensuring uniformity in product quality and safety performance for commercial vehicle operators. By defining consistent measurement units and testing methodologies, the document supports the interoperability of tire and rim components within the global automotive supply chain. The specifications cover a wide range of vehicle classes and usage scenarios, providing a foundational reference for engineers and manufacturers involved in the design and production of heavy transport equipment.