3.1.10. The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. However, this marking which may be placed on one side wall only, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation. [3] a7c0
3.1.11. The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. However, this marking which may be placed on one side wall only, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation. [3] a4c0
3.1.10. The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. However, this marking which may be placed on one side wall only, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation. [3] a3c0
3.1.9. The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. However, this marking which may be placed on one side wall only, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation. [3] a0c0