What does it cover?
UN R172 addresses snow performance of retreaded C1, C2 and C3 pneumatic tyres. Traction tyre classification is also covered for C2 and C3. Pre-cured tread and mould-cure processes are distinguished together with excluded tyre groups.
Who is it for?
For tyre and related equipment manufacturers, retreaders and technical teams preparing tyre tests.
Which subjects are addressed?
- Retreaded C1, C2 and C3 tyres
- Snow performance
- C2 and C3 traction tyre classification
Common question
Does R172 regulate production of new tyres?
No. It focuses on retreaded tyres. Tyre class, retreading process and the intended performance claim are assessed together.
Published RegsUP edition
This page is tied to the published RegsUP working edition below; it is not an official consolidated text.
RegsUP record title: R172 — UN Regulation No. 172
Working series: 00 · Included supplement: 1
RegsUP edition publication date:
This is the RegsUP publication decision date, not the date the regulation entered into force.