How to Inspect Your Tires: A Beginner’s Step-by-Step Safety Check

Your tires are the only part of your car that touches the road. A short, regular inspection helps you spot unsafe wear, sidewall damage, slow leaks and aging that can lead to poor braking, hydroplaning, or a blowout. This guide shows a safe, beginner-friendly inspection you can do in your driveway with a few inexpensive tools.

What you will need

• Tire pressure gauge (digital or dial is easiest).
• A quarter and a penny (or a small tread depth gauge if you have one).
• A flashlight (for sidewall and tread inspection).
• Paper and pen or your phone to note readings and any damage.

Quick safety note

Do inspections when the car has been parked for at least three hours (“cold” tires) for accurate pressure readings. If you find serious damage (large cuts, exposed cords, sidewall bulges) or are unsure, stop driving and have the tire checked by a professional. ([nhtsa.gov](https://www.nhtsa.gov/vehicle-safety/tires))

Step-by-step inspection

1. Park on level ground, set the parking brake and turn the engine off. Work in daylight or use a flashlight so you can clearly see the tread and sidewall.
2. Check tire pressure. Remove the valve cap and press your gauge to the valve stem; read the pressure and compare it to the recommended psi on your driver’s doorjamb or owner’s manual. Inflate or deflate to the vehicle manufacturer’s recommended cold pressure. Check the spare too. Do this at least once a month. ([nhtsa.gov](https://www.nhtsa.gov/vehicle-safety/tires))
3. Scan the tread visually. Look for nails, screws, sharp objects, or deep cuts. If you see foreign objects embedded in the tread, make a note — a slow leak may follow and a shop should evaluate the repairability. ([tireindustry.org](https://www.tireindustry.org/resources/consumer-education/consumer-safety-overview/why-do-tires-fail/))
4. Use the coin tests for tread depth. Place a quarter into a main tread groove with Washington’s head pointing down. If you can see the top of his head, the tread is at or below 4/32″ — consider replacing soon. For the legal minimum, use the penny test: if Lincoln’s head is visible the tread is at or below 2/32″ and the tire should be replaced. Check several grooves around the tire and use the lowest reading you find. ([exchange.aaa.com](https://exchange.aaa.com/automotive/car-care-repair-and-maintenance/tire-safety-and-maintenance/))
5. For a more exact measurement, use a tread depth gauge. Rest the gauge’s base on the tread blocks and press the probe into the groove; read the measurement and record the lowest value found around the tire. New passenger tires typically start at about 10/32″–11/32″. ([discounttire.com](https://www.discounttire.com/learn/tire-tread-depth))
6. Look for uneven wear. Measure or compare tread depth at the outer edge, center and inner edge. Edge-only wear may indicate underinflation or alignment issues; center wear can mean overinflation; scalloped or cupped wear may point to balance or suspension problems. If you find uneven wear, schedule a professional inspection. ([exchange.aaa.com](https://exchange.aaa.com/automotive/car-care-repair-and-maintenance/tire-safety-and-maintenance/))
7. Inspect the sidewalls. Run a flashlight along the sidewall and feel with your hand (carefully) for bulges, blisters, cuts that expose cords or fabric, and deep cracks. A bulge or visible ply means internal cord damage and the tire must be replaced. Do not attempt a patch where sidewall cords are exposed. ([tireindustry.org](https://www.tireindustry.org/resources/consumer-education/consumer-safety-overview/why-do-tires-fail/))
8. Find the DOT date code. Check the sidewall for the DOT Tire Identification Number; the last four digits show the week and year the tire was made (for example, 2714 = 27th week of 2014). Tire age is one factor in replacement decisions — many manufacturers recommend close attention after six years and replacement by 6–10 years depending on manufacturer guidance and storage/exposure. Use age as context along with tread and condition. ([nhtsa.gov](https://www.nhtsa.gov/vehicle-safety/tires))
9. Record what you find and repeat monthly. Keep notes of tread depth, pressure, and any damage so you can spot changes over time. If a tire has a nail, a slow leak, vibration, a pull, or any damage you can’t confidently assess, have a qualified tire shop inspect it promptly. ([nhtsa.gov](https://www.nhtsa.gov/vehicle-safety/tires))

Tips & warnings

• Always check pressure when tires are cold (at least three hours after driving) for accurate readings. Inflating to the pressure on the tire’s sidewall is wrong—the correct pressure comes from the vehicle placard or owner’s manual. ([nhtsa.gov](https://www.nhtsa.gov/vehicle-safety/tires))
• The penny test (2/32″) is the legal minimum in many places, but stopping performance in wet conditions worsens well before then — AAA and tire testers recommend considering replacement around 4/32″. If you drive in rain or snow, err toward replacement earlier. ([exchange.aaa.com](https://exchange.aaa.com/automotive/car-care-repair-and-maintenance/tire-safety-and-maintenance/))
• Sidewall damage (bulges, exposed cords) cannot be safely repaired — the tire should be taken out of service. If you hit a curb or pothole, re-check the sidewall and the tire pressure soon after. ([tireindustry.org](https://www.tireindustry.org/resources/consumer-education/consumer-safety-overview/why-do-tires-fail/))
• Uneven wear can point to alignment, balance, or suspension issues. Fixing the underlying cause and rotating tires on schedule (often 5,000–8,000 miles) extends tire life. For specific repair or replacement work, use a professional. ([exchange.aaa.com](https://exchange.aaa.com/automotive/car-care-repair-and-maintenance/tire-safety-and-maintenance/))

Regular, friendly inspections protect your safety and can save money by catching small problems before they become big ones. Spend 10–15 minutes once a month checking pressure, tread, and sidewalls — and if anything looks off, have a tire shop give it a quick professional look.