You should replace your tires based on several key factors concerning safety and performance:
- Tread Depth : Legally and for safety, tires must be replaced when the tread depth falls below 1.6 mm (2/32 inch). For winter tires, replacement is recommended if tread depth is below 4 mm for better grip on snow and ice. You can check tread depth using coin tests or tread wear indicators built into the tire.
- Age of the Tires : Most manufacturers recommend replacing tires every 6 to 10 years regardless of tread wear because rubber deteriorates over time, impacting safety. After 5 years, it’s a good idea to have tires inspected regularly, and those 10 years or older should be replaced even if they appear fine.
- Visible Damage or Wear : If tires show signs of significant damage such as punctures, sidewall cuts, uneven or abnormal wear, or visible wear bars, replacement is necessary regardless of age or tread depth.
- Driving Conditions and Habits : Tires can wear faster based on road conditions, climate, and driving style. For example, harsh weather, rough roads, or off-road use may require earlier replacement.
- Replacement Practices : It is recommended to replace all four tires at once for optimal handling and safety. If replacing only two, they should be installed on the rear axle to maintain vehicle stability.
In summary:
- Check tread depth regularly; replace if below 1.6 mm (or 4 mm for winter tires).
- Replace tires every 6-10 years regardless of tread.
- Replace immediately if damaged or showing abnormal wear.
- Replace all four tires together if possible for best performance and safety.
Regular inspections and maintenance can help extend tire life and ensure timely replacement.
