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Tire Maintenance Guide for Truckers

8 min read

Tires are your second-largest expense after fuel. They're also critical for safety. Proper maintenance extends tire life, improves fuel economy, and prevents dangerous blowouts.

Tire Pressure

This is the single most important factor in tire life and performance.

Why Pressure Matters

Underinflation: Increased heat, faster wear on edges, potential blowout risk
Overinflation: Harsher ride, center tread wear, reduced traction
Correct inflation: Even wear, best fuel economy, maximum tire life

Checking Pressure

Check when tires are cold (before driving or 3+ hours after stopping)
Use a calibrated gauge—truck stop air gauges aren't always accurate
Check all tires, including inner duals
Refer to tire placard for correct pressure based on load

Check pressure at least weekly, and before every trip.

Tread Depth

Legal Minimums

Steer tires: 4/32" minimum
Drive and trailer tires: 2/32" minimum

Practical Recommendations

Don't run to legal minimum. Replace steer tires around 6/32" and others around 4/32" for better wet traction and safety margin.

Measuring

Use a tread depth gauge. Check multiple points across the tire—uneven wear indicates problems.

Visual Inspections

Every pre-trip, check for:

Cuts, cracks, bulges, or punctures
Objects embedded in tread
Uneven wear patterns
Damaged valve stems
Loose or missing lug nuts

Tire Wear Patterns

Wear patterns tell you about underlying problems:

Center wear: Overinflation
Edge wear: Underinflation
One-sided wear: Alignment issues
Cupping/scalloping: Suspension or balance problems
Flat spots: Brake issues or skidding

Address the cause, not just the symptom.

Alignment

Misalignment causes rapid tire wear and poor handling. Signs of alignment issues:

Truck pulls to one side
Uneven tire wear
Steering wheel off-center

Have alignment checked annually or when you notice symptoms.

Rotation

Rotating tires helps equalize wear. For trucks:

Move tires between positions as wear dictates
Steers don't rotate (directional tires)
Duals can be rotated inner/outer
Follow manufacturer recommendations

Tire Matching

Duals should be matched within 4/32" tread depth difference. Mismatched duals cause the smaller tire to scrub and wear faster.

When to Replace

Tread at or near legal minimum
Visible damage (cuts, bulges, cracks)
Age over 6 years (check DOT date code)
Irregular wear that can't be corrected
After any significant impact damage

Buying Tires

Match size and load rating to truck requirements
Consider application (steer, drive, trailer, all-position)
Balance price vs. quality—cheapest isn't always most economical
Buy from reputable dealers
Keep purchase records for warranty

Summary

Good tire maintenance extends tire life, improves fuel economy, and prevents dangerous failures. Check pressure frequently, inspect visually every trip, address wear patterns promptly, and replace tires before they become hazardous.

Tires are expensive, but roadside blowouts and accidents are more expensive.

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