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TRIMIS

Road grip for worn and new winter tyres

PROJECTS
Funding
Sweden
Sweden Flag
Duration
-
Status
Complete with results
STRIA Roadmaps
Transport mode
Road icon
Transport policies
Safety/Security
Transport sectors
Passenger transport,
Freight transport

Overview

Objectives

This study has measured road grip on wet, salted asphalt road at freezing temperatures for used and new winter tyres, with the purpose to investigate how the road grip for the three different types of winter tyres that exist in Sweden degrade by age and degree of wear. Also summer tyres were included in the study.

Methodology

In total, 84 tyres have been tested, of which 31 were completely new while 53 were used. The tyres have been tested on smooth ice and packed snow.

Funding

Funding Source
Swedish Transport Administration

Results

The results show that studded tyres and un-studded Nordic winter tyres have the same are road grip on the tested road surface. The difference between new and worn tyres for these two tyre types are for most of the investigated performance measures negligible. The new European winter tyres perform 10–13 per cent better than the two other types of winter tyres on wet asphalt in the current weather conditions. For the worn tyres, the advantage of the European tyres is smaller, 5–7 per cent better than the other two types of winter tyres. The summer tyres perform as good as, or better, than the European winter tyres. This applies to both new and worn tyres.

Partners

Lead Organisation
EU Contribution
€0
Partner Organisations
EU Contribution
€0

Technologies

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