A DOT date code ending in 15 was manufactured in 2015. The first two digits are the week. 2615 means week 26 of 2015. A mid-year tire from 2015 is replace advised: Past most manufacturer limits regardless of tread
Week 1 of 2015
Made in week 1 of 2015
Dec 29, 2014 to Jan 4, 2015 (approx.)
11 years 9 months · Replace advised
Past most manufacturer limits regardless of tread
Open 0115 in the decoderWeek 26 of 2015
Made in week 26 of 2015
Jun 22 to Jun 28, 2015 (approx.)
11 years 4 months · Replace advised
Past most manufacturer limits regardless of tread
Open 2615 in the decoderGeneral guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
Made in week 26 of 2015
Jun 22 to Jun 28, 2015 (approx.)
11 years 4 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 2015 is 11 years 4 months old as of 2026-10-22. A tire from week 1 is 11 years 9 months. The exact age depends on the week in the DOT code.
A mid-year 2015 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 15, such as 2615, was made in week 26 of 2015. The first two digits are the week, from 01 to 53.
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