Why Tire Condition Matters

Your tires are the only point of contact between your vehicle and the road, directly affecting braking distance, handling, and safety in wet or icy conditions. Recognizing when tires are worn out helps you replace them before they become a safety hazard.

Key Signs Your Tires Need Replacing

Low Tread Depth

Using the penny test, insert a penny into the tread groove with Lincoln’s head facing down. If you can see the top of his head, your tread is too shallow and the tire needs replacing.

Visible Tread Wear Indicators

Most modern tires include built-in wear bars that become flush with the tread surface once the tire reaches its minimum legal tread depth.

Cracking or Dry Rot

Small cracks in the sidewall or tread, often caused by age and UV exposure, indicate the rubber is deteriorating and the tire may be prone to failure even if tread depth appears adequate.

Bulges or Blisters

A bulge in the sidewall indicates internal damage to the tire’s structure and represents a serious safety risk, as the tire could fail without warning.

Uneven Tread Wear

Patches of wear concentrated on one side or in the center of the tread can indicate alignment issues, improper inflation, or suspension problems requiring inspection alongside tire replacement.

Excessive Vibration

Vibration that increases with speed, particularly if it wasn’t present before, can indicate internal tire damage or severe uneven wear.

Tire Age

Even tires with adequate tread can deteriorate due to age. Most manufacturers recommend replacement after six to ten years regardless of tread depth, since rubber compounds break down over time.

How to Find Your Tire’s Manufacture Date

Check the DOT code on your tire’s sidewall, where the last four digits indicate the week and year of manufacture.

Frequently Asked Questions

How do I know if my tire tread is too low?

The penny test is a simple way to check, or look for the built-in wear bar indicators molded into the tread grooves of most modern tires.

Can old tires be dangerous even with good tread?

Yes, rubber compounds degrade over time regardless of tread depth, which is why most manufacturers recommend replacement after six to ten years of age.

Is a small sidewall crack a serious problem?

Small surface cracks from age are common, but deeper cracks or any bulging should be inspected immediately, as they can indicate structural damage and risk of tire failure.