Direct answers on 393.67C8 tire defect citations: OOS risk, CSA points, repair urgency, and enforcement data from 13M+ inspections.
Ranks #1,465 of 3,146 FMCSR codes by citation frequency • OOS rate of 1.1% is below the FMCSR-wide average of 33.3%.
Improper fuel tank safety vent
Direct answers grounded in TruckCodex inspection data
No. Across our inspection records, only 1 truck out of 88 total citations for 393.67C8 was placed out of service, yielding a 1.1% OOS rate. This is far below the all-FMCSR average of 31.4%, meaning inspectors almost never remove trucks from service for tire defects in this category alone. You'll be cited, but your truck stays on the road in nearly all cases.
This violation carries a CSA severity weight of 6 points per citation. That weight is then multiplied by the number of citations in a rolling 30-day window to calculate your CSA score. If you receive one citation, you'll see 6 points added to your Safety and Maintenance BASIC. Multiple citations in a short period will compound: two citations = 12 points, three = 18 points, and so on.
First, inspect your tires for exposed fabric, bumps, bulges, or cuts—the defects covered under this code. Second, schedule repairs with a qualified mechanic or tire shop and document the work. Third, preserve all receipts and repair orders in case you need to contest the citation through DataQs. Our data shows tire citations often co-occur with inspection/maintenance code 396.3A1 (15 shared inspections in the last 90 days), so a full vehicle inspection may also be wise.
No, it's relatively minor. The 1.1% OOS rate for 393.67C8 is significantly lower than peer codes in vehicle maintenance: 393.9 (inoperable lamps) has a 6.9% OOS rate, and 396.3(a)(1) (general inspection/repair) sits at 45.3%. Our database shows 393.67C8 is ranked #1459 out of 3,036 FMCSR codes by citation volume, meaning it's enforced infrequently. Most inspectors flag it but don't remove your truck.
Yes, you can submit a DataQs (Roadside Dispute Resolution) challenge if you believe the citation is inaccurate. Equipment findings—like tire condition—can be contested if you have documented evidence that the tires were actually roadworthy at the time of inspection (e.g., a pre-trip inspection report, repair receipt from earlier that day, or photos). You have 90 days from the citation date to file. DataQs reviews the record and either upholds or removes the citation.
Texas dominates the enforcement data. In the last 180 days, Texas accounted for 73 citations for 393.67C8 out of our tracked record, with 1 out-of-service placement (1.4% OOS rate). No other state appears in our top-state list for this code, indicating that tire-defect inspections are heavily concentrated in Texas. If you operate in that state, be especially vigilant about tire condition before crossing state lines.
Repair promptly to avoid a second citation or a crash. While the immediate OOS risk is low (1.1%), our monthly trend shows enforcement spikes: December 2025 saw 38 citations, and March 2026 saw 16, compared to monthly lows of 1 citation in late summer. Tire defects—exposed fabric, bulges, cuts—degrade rapidly and increase blowout risk. Fix them within days, not weeks, and document the repair date.
It follows both. The FMCSA Safety and Maintenance BASIC score includes both driver and carrier violations. Your citation appears on your Motor Carrier Safety Improvement Plan (CSIP) record and your company's CSA profile. If your carrier receives multiple 393.67C8 citations across its fleet—Freightliner trucks (26 citations all-time) are the most cited make—the company may face increased scrutiny from safety audits and insurance carriers.
Where 393.67C8 is most commonly cited (last 180 days)
Other violations commonly found on the same inspection (last 90 days)
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.