A DOT date code ending in 04 was manufactured in 2004. The first two digits are the week. 2604 means week 26 of 2004. A mid-year tire from 2004 is replace advised: Past most manufacturer limits regardless of tread
Week 1 of 2004
Made in week 1 of 2004
Dec 29, 2003 to Jan 4, 2004 (approx.)
22 years 9 months · Replace advised
Past most manufacturer limits regardless of tread
Open 0104 in the decoderWeek 26 of 2004
Made in week 26 of 2004
Jun 21 to Jun 27, 2004 (approx.)
22 years 3 months · Replace advised
Past most manufacturer limits regardless of tread
Open 2604 in the decoderGeneral guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
Made in week 26 of 2004
Jun 21 to Jun 27, 2004 (approx.)
22 years 3 months
Past most manufacturer limits regardless of tread
General guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
Segments
Week ranges use ISO weeks, Monday through Sunday, and are approximate. Tire makers count weeks on their own calendars. The regulation describes a Sunday-to-Saturday week. Plant names come from the free NHTSA vPIC list. 49 CFR 574.5
Plant data from NHTSA, updated October 13, 2026.
A tire from week 26 of 2004 is 22 years 3 months old as of 2026-10-13. A tire from week 1 is 22 years 9 months. The exact age depends on the week in the DOT code.
A mid-year 2004 tire is in the “Replace advised” range: Past most manufacturer limits regardless of tread. General guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
The last two digits are the year. A code ending in 04, such as 2604, was made in week 26 of 2004. The first two digits are the week, from 01 to 53.
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