Roadside Inspection Tire Checklist | Tire University

A roadside tire checklist should focus on the defects inspectors can confirm quickly: tread depth, visible damage, exposed cords, air loss, separation, inflation-related distress, and whether the truck is obviously safe to continue.

At a glance

Topic	Rule	Why it matters
Visible condition first	Inspectors will quickly identify flats, leaks, exposed cords, cuts, and separations.	These defects often drive out-of-service decisions fastest.
Tread minimums	Steer positions need at least 4/32 inch; most other commercial tires need at least 2/32 inch.	Tread is one of the most measurable roadside items.
Vehicle Maintenance BASIC relevance	Roadside tire violations feed into CSA’s Vehicle Maintenance BASIC.	One inspection can affect both the trip and long-term safety performance.
Driver and carrier process	DVIR and repair closure still matter because prior known defects should not be left unresolved.	An unresolved tire issue can point to a bigger process failure.

What matters most

For drivers

Drivers should think like the inspector: what can be seen, measured, or heard fast enough to stop the trip?

For fleet teams

Fleet teams should use roadside preparation to reduce surprises, not to teach drivers how to hide defects. The goal is to remove known tire risks before enforcement finds them.

How roadside tire checks actually feel in real life

A roadside inspection is not the moment to discover the trailer had a low tire or the steer tread was closer than anyone realized. Inspectors start with what is visible, measurable, and safety-critical. Tires fit all three categories.

That makes roadside readiness less about memorizing rules and more about removing the obvious failure points before the trip reaches enforcement territory.

Why roadside readiness should be part of dispatch, not just safety

A delayed truck creates service problems for dispatch, not just compliance problems for safety. That is why the best roadside-prep culture is shared: dispatch protects time, maintenance protects equipment, and drivers protect the final pre-trip decision.

Tire checks belong inside that joint process because the signals are visible and actionable if anyone looks early enough.

What to do if a tire looks borderline

Measure it, inspect it more closely, and escalate it before the truck rolls. Borderline tires are exactly where rushed judgment creates roadside cost later.

Use the tread-depth guide, the FMCSA 393.75 page, and the quote flow if the issue is now a replacement decision.

Checklists

Driver focus

Pre-trip or driver checklist

Check steer tread and visible condition before entering likely inspection corridors.
Walk the trailer and look for low-pressure or damaged positions.
Listen for leaks and look for separation or cord exposure.
Measure tread on any tire that is close to the threshold.
Confirm known repairs from the last DVIR were actually completed.

Fleet focus

Fleet owner or manager checklist

Review recent roadside tire findings and turn them into coaching points.
Map high-inspection routes and scale corridors to stronger pre-dispatch checks.
Use shop hold rules for obvious tire defects instead of leaving the call to dispatch pressure.
Keep emergency service contacts and common-size replacements organized by region.
Audit trailers with repeated roadside tire findings.