A DOT date code ending in 17 was manufactured in 2017. The first two digits are the week. 2617 means week 26 of 2017. A mid-year tire from 2017 is old: Many manufacturers recommend replacement in this range
Week 1 of 2017
Made in week 1 of 2017
Jan 2 to Jan 8, 2017 (approx.)
9 years 9 months · Old
Many manufacturers recommend replacement in this range
Open 0117 in the decoderWeek 26 of 2017
Made in week 26 of 2017
Jun 26 to Jul 2, 2017 (approx.)
9 years 3 months · Old
Many manufacturers recommend replacement in this range
Open 2617 in the decoderGeneral guidance, not a safety inspection. Follow the tire and vehicle maker's recommendation.
Made in week 26 of 2017
Jun 26 to Jul 2, 2017 (approx.)
9 years 3 months
Many manufacturers recommend replacement in this range
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 2017 is 9 years 3 months old as of 2026-10-13. A tire from week 1 is 9 years 9 months. The exact age depends on the week in the DOT code.
A mid-year 2017 tire is in the “Old” range: Many manufacturers recommend replacement in this range. 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 17, such as 2617, was made in week 26 of 2017. The first two digits are the week, from 01 to 53.
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