Свашта...
http://www.which.co.uk/news/2013/03/which-reveals-best-and-worst-car-tyres-314384/
One of our most important tests assesses wet braking ability, with a car braking from 50mph down to 12mph in wet conditions.
In the most extreme case, the best-performing tyre for braking distance took only 34.0 metres to brake.
In identical, controlled conditions, exactly the same test car wearing the worst-performing tyre took 49.6 metres to brake from and to the same speeds.
Тестирани се летни гуми на мали градски возила. На влажен коловоз при брзина од 80km/h (50mp/h) со најдобрите гуми траекторијата на кочење до 20km/h е 34m, а со најлошите 49.6m! Тоа е ОГРОМНА разлика од 15.6m, односно 46% подолга траекторија на кочење помеѓу најлошите и најдобрите гуми. А тек замисли да е зимно време(кога не врне снег, но е влажно и температурата е 2~3 'C) колкава ќе биде разлика помеѓу добри зимски гуми и најефтините летни...
Wet
Under wet testing, the summer tyre regained some points, winning the wet braking, handling and wet circle tests. The margin was greatest in wet handling, where the summer tyre had an average speed of 86.5 kph and the best winter (Dunlop) could only manage 83.2 kph. Under wet braking the margins were closer, with the Continental and Dunlop winter tyres stopping just 1.4 meters behind the summer tyre from 50 mph and the Dunlop and Pirelli beating the summer tyre under the straight line aquaplaning test.
Dry
Again in the dry handling and braking tests, the summer tyre showed its strengths. While the best winter tyre (Continental) could keep close to the summer tyre during dry handling, the dry braking test once again showed where siped tyres lose out, with the test winning Dunlop taking 43.5 meters to stop the car from 60 mph, compared to 36.3 meters for the summer tyre.
