DOT violations › 393.75
FMCSA Violation 393.75: Tires — tread depth, flat, or unsafe condition
Cited for insufficient tread depth, a flat tire, exposed cords/belts, or other unsafe tire conditions.
Last updated: June 2026 · Data sources: NHTSA vPIC (live) and FMCSA public inspection records (periodic refresh).
Quick answer
FMCSA roadside violation 393.75 (tires — tread depth, flat, or unsafe condition) is a tires and wheels citation that frequently results in an out-of-service order. On a used truck, a past 393.75 citation does not prove a current defect — it tells you exactly what to verify before you buy. If the VIN appears in FMCSA roadside records, TruckWhere shows whether it has this or other violations.
Free FMCSA roadside summary. We accept exact 17-character VINs only and never silently correct a VIN.
Is 393.75 serious?
This is a Tires and wheels violation. It frequently results in an out-of-service order. An out-of-service order means the vehicle could not continue until the condition was corrected at that time — it does not prove the defect remains today.
What a buyer should ask the seller
Ask the age and brand of the current tires and whether any were replaced after a citation.
What a mechanic should inspect
Measure tread depth on all positions; inspect sidewalls, cuts, bulges, and DOT date codes.
How 393.75 appears in a TruckWhere report
In a TruckWhere DOT Buyer Report, a 393.75 citation shows up in the roadside timeline with its date, state, unit attribution, out-of-service status, and a plain-English explanation — plus a Tires and wheels entry in repeated-system detection if it occurred more than once.
Check a VIN for 393.75 →Related tires and wheels violations
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Frequently asked questions
- What does FMCSA violation 393.75 mean?
- Cited for insufficient tread depth, a flat tire, exposed cords/belts, or other unsafe tire conditions. It frequently results in an out-of-service order.
- Is violation 393.75 serious?
- It is a tires and wheels citation that frequently results in an out-of-service order. Historical violations do not prove a current defect, but they tell you exactly what to verify before buying.
- Can I check if a truck's VIN has violation 393.75?
- Yes — if the VIN appears in FMCSA roadside records, TruckWhere shows its violations (including codes like 393.75), out-of-service events, and the inspection timeline for that exact VIN.