Tires wear gradually, so it’s easy to miss when they cross from “fine” to “unsafe.” A few quick checks keep you ahead of it.
Check tread depth
Most tires have wear bars built into the grooves. When the tread is flush with them, the tire is done. The classic penny test works too: insert a penny with Lincoln’s head down — if you can see the top of his head, replace the tire.
Mind the age
Rubber hardens over time even with plenty of tread left. Many manufacturers recommend inspection after about 5–6 years and replacement by around 10 years, regardless of mileage. The DOT date code on the sidewall tells you when the tire was made.
Look for damage
- Cracks or dry rot in the sidewall.
- Bulges or blisters (a sign of internal damage).
- Uneven wear, which can point to alignment or inflation problems.
- Repeated loss of pressure or visible punctures.
Replacing in full sets keeps handling balanced. When in doubt, have a qualified technician inspect them.
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