Цитата:
Сообщение от beleg85
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Чего нет без канавок???
Мне просто интересно, растолкуйте эту фразу если она действительно из стандарта.
И если можно пример пожалуйста шины без шильдика М+С где нет "канавок от края до центра" |
M+S marking on tyres is very misleading.
Many AWD tyres are rated M+S, M&S or M/S, i.e., mud and snow. Established by the USA Rubber Manufacturers Association (RMA), the M+S designation refers only to the tread pattern. The M+S standard calls for a tyre with grooves at the outside of the tread that extend into the centre. It also means that 25% of the tyre tread contact surface be open, i.e., a more open tread pattern.
You will find the M+S symbol on most all-season tyres, on off-road and all-terrain tyres and even some high performance summer tyres may have this designation. However, there are no performance standards to meet or traction tests to pass. Any tyre with grooves at angles and with 25% of the tread void can be labelled as M+S.
Это отсюда
http://www.snowtyres.com.au/severe-service-emblem - поищите, ещё найдёте.