米其林说可用10年. "If the tyres have not been replaced 10 years after their date of manufacture, Michelin recommends replacing them with new tyres as a precaution."
You are lying. There is no law sanctioning when a tire is too old. Manufacturers recommend replacement after 6 years. You are a fool if you believe that. Only law regarding tire replacement is 1.6 mm tread. However, some manufacturers recommend replacement at 3 mm tread. Again, you are a fool if you believe that. If you care about emission, drive cautiously and continue to use your old tire. Maybe, you are hypocrite. You don't care emission at all. Then, whatever.