GarageX calculators

Tire date code decoder

The last four digits of the DOT code are the tire's birthday. Older than it looks?

DOT code (or just the last 4 digits)

Every tire's sidewall carries a DOT code ending in four digits: two for the week, two for the year — 2319 means week 23 of 2019. Rubber ages regardless of tread depth; many manufacturers advise inspection from six years and replacement by ten, even on unused spares. Codes ending in only three digits are from before 2000 — that tire's decades old.