A DOT date code ending in 08 was manufactured in 2008. The first two digits are the week. 2608 means week 26 of 2008. A mid-year tire from 2008 is replace advised: Past most manufacturer limits regardless of tread
Week 1 of 2008
Made in week 1 of 2008
Dec 31, 2007 to Jan 6, 2008 (approx.)
18 years 9 months · Replace advised
Past most manufacturer limits regardless of tread
Open 0108 in the decoderWeek 26 of 2008
Made in week 26 of 2008
Jun 23 to Jun 29, 2008 (approx.)
18 years 3 months · Replace advised
Past most manufacturer limits regardless of tread
Open 2608 in the decoderGeneral guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
Made in week 26 of 2008
Jun 23 to Jun 29, 2008 (approx.)
18 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 2008 is 18 years 3 months old as of 2026-10-22. A tire from week 1 is 18 years 9 months. The exact age depends on the week in the DOT code.
A mid-year 2008 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 08, such as 2608, was made in week 26 of 2008. The first two digits are the week, from 01 to 53.
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