Glossary

DVIR

Last reviewed: 2026-05-20

Source review note: This term covers a compliance, regulatory, or enforcement topic where current rules, annual updates, or carrier policy may affect the correct answer. Use this as background only. Verify applicable regulations and carrier policy before making decisions.

Driver Vehicle Inspection Report — a federally required document (49 CFR Part 396) that commercial drivers must complete at the end of each duty day, reporting any defects or deficiencies observed on the vehicle. Tire defects must be noted on the DVIR. The DVIR must be reviewed by the next driver and signed by a qualified mechanic after any required repairs.

The DVIR is a legal document, not an informal note. Tire defects reported on the DVIR must be tracked and corrected before the next trip if they affect safe operation.

Real-World Use

A driver completing a post-trip DVIR notes a steer tire with a sidewall cut that was not present at departure — maintenance reviews the DVIR before the next driver takes the vehicle and removes the tire.

Reference Sources

Sources used for context and verification of regulatory thresholds, inspection criteria, and compliance references on this page.

Gov 49 CFR Part 396 - Inspection, Repair, and Maintenance (Electronic Code of Federal Regulations, reviewed 2026-05-20)

What to Pair It With

Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.

This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.