SOURCE-LINKED REGULATION GUIDE
UN R117 — Tyre rolling noise, wet grip and rolling resistance
Review tyre performance requirements together with their scope conditions.
Explore the scopeWhat does it cover?
UN R117 concerns approval of tyres for rolling sound emissions, wet grip and rolling resistance. This version covers C1, C2 and C3 tyres and distinguishes new from worn tyres; it also addresses assessment of C1 tyre abrasion. Temporary spares, racing tyres and other special-use tyres may be excluded.
Who is it for?
Tyre manufacturers, performance-testing teams and compliance specialists selecting vehicle tyres.
Which subjects are addressed?
- Rolling sound
- Wet grip
- Rolling resistance
- New/worn condition and scope exclusions
Common question
Are new and worn tyres assessed in the same way?
The scope distinguishes new and worn tyres according to the performance characteristic. Read the requirements for the relevant tyre class and characteristic together.
Source documents and references
Work with this regulation in RegsUP.
Read the text with its edition and sources. Assess available comparisons, relevant dates and question-and-answer features against your work needs.
Discuss access optionsRelated regulations
UN R30 — Tyres for passenger cars and light vehicles
Review the scope of new tyres by vehicle class and intended use.
UN R54 — Commercial-vehicle tyres
Review the scope and approval topics for new commercial-vehicle tyres.
UN R142 — Installation of tyres on vehicles
After choosing a tyre, examine how it may be used on the vehicle.