How to Inspect Your Tires for Cracks and Bulges After Winter

Winter Damage to Tires

Winter is hard on tires. Salt and chemicals corrode the steel belts. Potholes bend rims and damage sidewalls. Cold temperatures make rubber brittle. Temperature swings from freezing nights to warmer days stress tire structure. After winter, tires need thorough inspection to identify problems before they become safety hazards.

The Visual Inspection Process

Inspect all four tires in good lighting. Look at the entire sidewall from top to bottom. Check the tread area for embedded rocks or debris. Feel the rubber for soft spots. Look for any bulges, cracks, or color changes. Pay special attention to the areas where the sidewall meets the tread. Damage here is common after winter.

Signs of Winter Tire Damage

• Visible cracks in the sidewall or tread
• Bulges or blisters on the sidewall
• Dents or deformation of the tire surface
• Embedded rocks, salt, or debris
• Uneven wear patterns
• Loss of tread depth (below 4/32)
• Discoloration or fading of rubber

Testing Tread Depth After Winter

Use the toonie test to check tread depth. Insert a toonie into the groove between tread ribs with the maple leaf facing down. If the leaf is covered, tread is adequate. If you see the entire leaf, tread is too shallow. Test at least three locations on each tire to identify uneven wear.

Checking for Sidewall Damage

Sidewall damage from potholes is common in winter. Look for bulges, blisters, or visible dents. Run your hand over the sidewall to feel for soft spots or deformation. Any sidewall damage is serious and requires replacement. Do not drive on a damaged sidewall.

Alignment Check After Winter

Winter potholes can knock your vehicle out of alignment. If you notice uneven tire wear, pulling to one side, or steering wheel vibration, alignment adjustment is needed. Misalignment accelerates tire wear significantly. Have alignment checked if you hit major potholes during winter.

When to Replace vs. Repair

If inspection reveals cracks, bulges, or major damage, replacement is necessary. If tread depth is below 4/32, replacement is due. If wear is uneven, have alignment checked and tires balanced. Minor debris can be removed. Deep cuts may be repairable if in the tread area and smaller than 6 mm. Professional assessment determines the right action.

Frequently Asked Questions