Tire Inspection
Pre-Trip Tire Checklist
Pre-trip tire checks work best when they are the same every time. A consistent route keeps the inspection from depending on memory at the end of a long day.
This checklist is informational and should be used with your carrier procedures and applicable regulations.
Driver-focused sequence
- Look for obvious low or flat tires before moving.
- Check steer tires closely — these have the highest removal standard and the highest safety consequence.
- Inspect drive duals: outer side first, then use a light or mirror to check the inner tire condition and valve.
- Inspect trailer tires including inside duals — this is the area most often skipped under time pressure.
- Listen and feel for unusual vibration, pulling, or noise when moving slowly before committing to a dispatch.
Position-by-position check reference
| Position | What to check | Escalate if |
|---|---|---|
| Steer — left and right | Tread depth (both ribs), sidewall condition, valve cap, inflation by gauge | Tread below 4/32 inch, bulge, cut with casing exposure, or repeated low pressure |
| Drive duals — outer | Tread depth, sidewall for cuts and scrub, valve cap condition | Cord visible, bulge, flat or noticeably soft, or heat marks at sidewall base |
| Drive duals — inner | Sidewall where visible, valve access and cap, any signs of dual contact | Dual contact marks, missing or cracked valve cap, tire visibly low compared to outer |
| Trailer — outer | Tread depth, sidewall condition, valve cap | Tread below 2/32 inch, bulge, cracking, or repeated pressure loss history |
| Trailer — inner | Condition with light, pressure if gauge and extension are available | Inside dual obviously low, sidewall damage visible, dual contact scrub marks |
Escalate before leaving
Stop and escalate — do not dispatch — when any tire shows visible cord, a sidewall bulge, a cut that appears to reach the casing structure, repeated pressure loss without a corrected cause, loose wheel hardware, or pressure obviously below safe service level. These are removal triggers, not items to monitor on the next run.
A practical route for busy yards
Start where you always start, then move the same way every time. Many missed tire defects come from changing the route depending on where the truck is parked. A driver who starts at the left steer, works down the driver side, crosses behind the trailer, and comes back up the passenger side is less likely to skip a trailer inner dual.
If the yard is dark or noisy, pressure and inside-dual checks need tools, not confidence. Keep the flashlight and gauge where they can be reached before the walk starts.
Step-by-Step Checklist
- Steer tires inspected — tread depth and sidewalls
- Drive outer duals checked — tread and sidewall visible
- Drive inner duals checked with light and valve confirmed
- Trailer outer tires checked
- Trailer inner duals checked — pressure verified if equipment allows
- All valve caps present
- No visible sidewall bulges or cord exposure
- Pressure checked per policy or gauge on any tire appearing low
FAQ
What tire checks are required in a pre-trip inspection?
Federal regulations require drivers of commercial motor vehicles to review the last vehicle inspection report and certify that defects have been corrected or are not safety-related. Drivers are also required to conduct a pre-trip inspection that covers tires, wheels, and related components. The specific checks are defined by carrier policy and applicable regulations — use your carrier's written procedures as the base, supplemented by this checklist.
Can a driver be held responsible for a tire defect that was not found during pre-trip?
Drivers have a legal duty to perform a thorough pre-trip inspection and report defects before operating the vehicle. A missed defect that was visible and detectable during a proper inspection can contribute to driver liability in the event of a tire-related incident. A consistent, documented inspection routine is the best protection. Report anything that looks unusual, even if uncertain.
What is the fastest reliable tire check for a pre-trip?
A systematic visual walk-around — looking for obvious flats, visible sidewall damage, missing valve caps, and dual contact marks — combined with a pressure check using a gauge for any tire that looks low. The fastest check that misses problems is not adequate. Inside duals, valve stems, and sidewall cuts are the areas most commonly skipped under time pressure. Building them into a fixed route costs less time than finding a problem roadside.
Source Notes
- Government 49 CFR 393.75 - Tires
- Government FMCSA Motor Carrier Safety Planner: Tires (393.75)
- Government 49 CFR Part 396 - Inspection, Repair, and Maintenance
- Site note TruckTireGuide.com editorial notes
Editorial Review
TruckTireGuide.com editorial team
Maintained by an independent editor with fleet tire-program experience in regional Class 8 operations, supported by transportation regulatory research and commercial vehicle technical writing.
Pages are checked against public regulations, manufacturer resources, industry references, and conservative field practice. The site does not approve tires for service or replace qualified inspection.