TS ISO 3911

TS ISO 3911 provides a common vocabulary, designation system and marking approach for wheels and rims intended for pneumatic tyres. In practical technical terms, it helps standardize how these components are identified and described, while also reflecting their core role in supporting the tyre, carrying vehicle loads and forming the interface between the tyre and the wheel hub.

Why the vocabulary matters

As a vocabulary standard, this document is meant to distinguish the main terms used for wheels and rims without turning into a complete catalogue of design features. In general engineering usage, the wheel is the rotating load-bearing assembly, while the rim is the part that seats and retains the tyre. A shared terminology base is valuable in manufacturing, procurement, maintenance and technical communication because it reduces ambiguity when the same component must be specified consistently across organizations and markets.

Designation and marking as identification tools

The standard also specifies the content, location and minimum size of wheel and rim markings. This supports a more uniform identification system on a worldwide basis, making markings easier to read, compare and apply consistently. In broader technical context, such identification rules help users match the correct wheel or rim to its intended application and improve clarity in product documentation and traceability.

• Terms used for wheels and rims intended for pneumatic tyres
• Rules for designation and shorthand identification
• Marking content, placement and minimum size
• Uniform identification on a worldwide basis