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A wall of codes on rubber.
Also known as: Sidewall code
The moulded codes on a tyre sidewall giving its size, construction, load, speed and date of manufacture.
Give a tyre's dimensions, construction, load capacity, speed rating and week of manufacture.
Contexts: Public information
The four-digit code gives the week and year of manufacture, which matters because rubber degrades with age independently of use — a tyre with full tread can be too old to fit.
Contexts: Public information
Moulded rather than printed so the marking survives the tyre's working life, since a label would not.
Contexts: Public information
Moulded raised characters around the sidewall giving a size string, a load index, a speed letter and a four-digit date code within an oval.