ERJ staff report (DS)
Berne, Switzerland -- The Swiss Touring Club (TCS) has studied old tyres and found that, even with a full tread, wet braking and other performance parameters deteriorate with age. As a result, TCS tells members not to buy tyres more than two years old.
For example, a five year old tyre takes an extra 6m to stop from 80 kph in the dry, compared to a new, fresh tyre. TCS found simlar loss of performance in wet braking.
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Press release (German language) from TCS
Press release (French language) from TCS
Above Press release from TCS auto-translated into English language (from French)