Hello, for the 100 km/h approval the tyres must not be older than 6 years, the DOT number is decisive. But what does that mean in concrete terms? Can I drive from the day when the tire becomes 6 years old only 80 km/h, or does this apply from the day when the tire becomes 7 years old? Example from practice, my tyres are Bj. KW25 2015. So 6 years and 5 weeks. May I drive still 100 km/h, or not? And before sayings come again by reason of tires you do not save etc., the holiday is over, this year there is nothing left and the ride to the parking place is inside, and next year there will be new tires on it anyway. Unfortunately, you will find the same wording everywhere without going into the details. Or I’m just too stupid to understand it.