A designated gum is used in production especially for snow tyres to improve tyre’s flexibility and mobility. There are numerous sipes distributed on tread to increase traction for driving safty. In pratice, this tyre significantly prevents loss of control and shortens braking distance on snowy roads.
Snow tires are usually tires with a different rubber composition from all-weather (all-season) tires. Cold-weather tires include a greater percentage of natural rubber and silica so there is not as much hardening as found in synthetic rubber in cold conditions:they provide better traction at lower temperatures. Snow tires provide more small-tread areas, increasing tractionon snow and, in wet conditions, allowing water to escape from under the tire more easily.
This reduces the risk of hydroplaning. Snow/winter tires start to perform better than summer or all-season tires if temperature falls below 7C (45F), as the rubber compounds in the latter harden resulting to decreasing grip even on dry pavement Interestingly one achieves maximum grip on packed snow if the slippage/wheel spinis 40-50%, i.e. one should turn off the traction control in most modern cars for maximum traction.
EU Tyre Label and Efficiency Classes
The European Union has introduced the EU Tyre Label by Regulation (No. 1222/2009) identically and bindingly for all EU member states. It applies to passenger car tyres, light commercial vehicle tyres and heavy commercial vehicle tyres produced after 01.07.2012.
Three different areas are tested: rolling resistance, wet grip and the rolling noise the tyre makes on the road.
The following are not affected by the EU Tyre Label: retreaded tyres, professional off-road tyres, racing tyres, tyres with additional devices to improve traction such as spiked tyres, T-type emergency tyres, special tyres for fitting to vehicles first registered before 1 October 1990, tyres with a maximum authorised speed of 80 km/h, tyres for rims with a nominal diameter of 254 mm or less or 635 mm or more.
With this regulation, the European Union is pursuing the goal of promoting economic and ecological efficiency in road traffic as well as increasing road safety on the one hand, and on the other hand, granting consumers more product transparency and at the same time serving as an active decision-making aid.
Already during the incorporation, experts criticise the fact that the EU Tyre Label unfortunately only shows a few product characteristics. Apart from rolling resistance, wet grip and rolling noise, which are the main focus of EU tyre labelling, tyres have much more important and safety-relevant product characteristics, such as aquaplaning properties, driving stability, service life, braking properties on dry and wet roads, behaviour in wintry conditions, etc.
Tyre manufacturers point out that test results from various institutions and journals remain an important information medium for the end consumer. These tests usually focus on further safety-relevant product characteristics besides the EU standard qualifications for tyre labelling, which are always important for the final customer.
Trek M7 tyre review
Average based on 19 test results
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Internal noise level
13.03.2015 from Jonathan Worst tyre I've ever had. Despite only being on rear axle of fwd car, it seriously upset the steering. Very noisy (whiny) and took 10% off fuel economy. Did help in snow but awful in wet and dry. It's more like an off road tyre. Very good wear (unfortunately!) as only lost 1.5mm over 16000 km. had to replace them as felt unsafe.