The European Tyre and Rim Technical Organisation (ETRTO) exists to specify and harmonise sizes of rims and their associated
pneumatic tyre
Pneumatics (from Greek ‘wind, breath’) is a branch of engineering that makes use of gas or pressurized air.
Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases. A centrally located and ele ...
s across the
European Union
The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...
. ETRTO sizes apply to rims and tyres for vehicles of all types, including bicycles. The great advantage of ETRTO sizing is that it is unambiguous; previously, nominal dimensions were used which were interpreted in different ways by different countries and manufacturers - a problem for the end user.
ETRTO works in liaison with the
International Organization for Standardization
The International Organization for Standardization (ISO ) is an international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Art ...
to develop relevant standards.
List of ISO committees in liaison with ETRTO
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See also
* ISO 5775 – standard bicycle tyre and rim designations
* Uniform Tire Quality Grading
Uniform Tire Quality Grading, commonly abbreviated as UTQG, is the term encompassing a set of standards for passenger car tires that measures a tire's Wear#Abrasive_wear, treadwear, Thermal diffusivity, temperature resistance and Traction (en ...
References
External links
ETRTO home page
Motor trade associations
Pan-European trade and professional organizations
Standards organisations in Belgium
Tire industry
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