DOT Code 5317
A tire stamped DOT 5317 was made in the 53rd week of 2017 — around December 31, 2017 - January 6, 2018. That makes it about 8.6 years old today, with 8 winters behind it (winter production).
Decoded from the last 4 digits of the US DOT Tire Identification Number per NHTSA 49 CFR § 574.5: week "01" is the first full calendar week of the year, and each week runs Sunday through Saturday. The date code encodes only the manufacturing week and year.
Year interpretation: the molded year symbols 17 are read as 2017. Four-digit date codes apply to tires made since 2000; pre-2000 tires used a three-digit format and are outside this decoder.
When was this tire made?
Production timeline & age milestones
- Vulcanized — December 31, 2017 - January 6, 2018
Winter production: Tires molded in winter weeks typically reach retail shelves for the spring and summer selling season. Production season has no effect on tire quality — vulcanization is a temperature-controlled indoor process year-round.
- 6-year mark — December 31, 2023 - January 6, 2024 (passed)
This tire crossed the 6-year point — the age from which many manufacturers recommend annual professional inspection — during the week of December 31, 2023 - January 6, 2024.
- 10-year mark — December 31, 2027 - January 6, 2028 (upcoming)
The 10-year replacement threshold some manufacturers cite will arrive during the week of December 31, 2027 - January 6, 2028.
- Today — 8.6 years old
8 full winters and roughly 447 weeks have elapsed since this tire left the mold.
Tires made in 2017: modern TIN standardization
- ▸In 2015, NHTSA finalized updates to 49 CFR § 574.5 standardizing the Tire Identification Number at 13 symbols with a 3-symbol plant code — tires made in 2017 sit in the transition window during which older 2-symbol plant codes were still permitted.
- ▸The full TIN from this era reads: plant code (2–3 symbols), manufacturer code, then the 4-digit week/year date code.
- ▸A tire from 2017 is past the 6-year point at which many manufacturers recommend annual professional inspection.
🔶 Age-Based Guidance
Many vehicle and tire manufacturers recommend age-based inspection or replacement for tires in this age range, regardless of tread depth. Check your vehicle owner's manual and the tire manufacturer's guidance.
Consult your vehicle manufacturer's tire age recommendations (found in your owner's manual) and have the tire professionally inspected.
Source: NHTSA recommends following your vehicle and tire manufacturer's specific guidance on tire age and replacement. Age recommendations vary by manufacturer — always consult your owner's manual.nhtsa.gov/vehicle-safety/tires ↗
Five things worth checking, regardless of age
Check pressure monthly
Check cold, against the pressure listed on your driver-side door jamb — not the number on the tire sidewall.
Check tread depth
Use the penny test or a tread gauge. 2/32" is a commonly cited U.S. minimum — check your state and vehicle manufacturer guidance, and consider replacing earlier for winter driving.
Look for visible damage
Cracks, cuts, bulges, or sidewall crazing are reasons to have a tire professional inspect the tire regardless of age.
Note storage conditions
Infrequent use, direct sun, and warm climates accelerate aging — a reason to check sooner, not a reason to skip checking.
Keep up with rotation
Follow your owner’s manual rotation interval and pattern; uneven wear on one tire often signals a pressure or alignment issue worth checking.
This is a general checklist, not a diagnosis — a tire professional's inspection is the only way to confirm a specific tire's condition.
What the DOT date code tells you
✅ What it reveals
- • Manufacturing week (01–52; some calendar years include week 53)
- • Manufacturing year for the modern post-2000 format
- • Approximate calendar date range
- • Current tire age in years
❌ What it does NOT reveal
- • Tire brand or manufacturer
- • Manufacturing plant or country
- • Tire model, size, or compound
- • Wet grip, noise, or fuel efficiency
- • Whether the tire is safe to use
The full Tire Identification Number (TIN)
The 4-digit date code is only the final part of the full US DOT Tire Identification Number (TIN). The complete TIN format (as of 49 CFR § 574.5, updated April 2025) is:
Source: eCFR Title 49, Subtitle B, Chapter V, Part 574 —ecfr.gov ↗
Frequently asked questions
What does DOT 5317 mean?▼
DOT 5317 means the tire was manufactured during week 53 of 2017 — approximately December 31, 2017 - January 6, 2018. The 4-digit date code does NOT identify the tire brand, model, plant, or any performance characteristic.
Could 17 mean 1917 instead of 2017?▼
Not in the modern 4-digit date format decoded here. Four-digit DOT date codes are used for tires manufactured since 2000, so 17 is interpreted as 2017. Pre-2000 tires used a 3-digit date code, and the decade can be ambiguous without additional markings.
Does tire age alone determine if a tire is safe?▼
No. Tire safety depends on tread depth, visible damage, storage conditions, and your vehicle manufacturer's specific recommendations. Age is one factor among many. NHTSA recommends following your vehicle and tire manufacturer's guidance.
Where can I find the full DOT/TIN on my tire?▼
Look on the tire sidewall for the letters "DOT" followed by the full Tire Identification Number. The last 4 digits are the date code. You may need to check both sidewalls — the full TIN is sometimes on the inward-facing side only.
When does a tire stamped DOT 5317 turn 10 years old?▼
A tire stamped DOT 5317 will reach the 10-year mark during the week of December 31, 2027 - January 6, 2028. Some tire and vehicle manufacturers recommend replacement by that age, regardless of remaining tread depth.
How many winters has a DOT 5317 tire been through?▼
Approximately 8 full winters have passed since this tire was vulcanized in winter 2017 (week 53). Seasonal temperature cycling contributes to gradual rubber compound aging, alongside UV exposure and storage conditions.
More free tools
Check your pressure
Start from your vehicle’s door-jamb cold PSI and see how temperature affects a gauge reading.
Compare tire sizes
See the diameter, sidewall, and speedometer impact of a size change.
Look up the plant code
Look up the code group right after "DOT" in a documented plant-code reference.
Read the sidewall
Understand load index, speed rating, UTQG, and every other marking.