How to Determine Whether Tires Need Replacement
2 Answers
Methods to determine whether tires need replacement: You can use the coin test method. Insert a one-yuan coin vertically into the tire tread along the base of the chrysanthemum pattern. If the tread is extremely shallow and fully exposes the chrysanthemum pattern on the coin, it indicates severe tread wear with very shallow grooves, suggesting replacement is needed. Tires are circular elastic rubber products mounted on various vehicles or machinery, typically installed on metal rims. They support the vehicle body, cushion external impacts, maintain contact with the road surface, and ensure driving safety, handling stability, and comfort.
Deciding whether to replace tires requires a comprehensive check of several areas. Every time I wash my car, I casually check the tread depth by inserting a one-yuan coin into the grooves. If the entire chrysanthemum pattern is visible, the tread is definitely worn shallow and it's time for a replacement. Sidewall bulges absolutely cannot be ignored—my friend's car once had a high-speed blowout because of this. Tires older than six years need to be replaced even if they haven’t been driven much, as aged rubber becomes brittle like hard plastic and is prone to cracking. Tires patched more than three times or with patches on the sidewall can no longer be trusted. If the steering wheel shakes violently while driving, the tires are likely deformed or unevenly worn. Worn-down small protrusions in the drainage grooves indicate poor grip, making the car prone to skidding in the rain. Remember to check the production date—the four-digit code on the sidewall, like 3621, means the tire was produced in the 36th week of 2021. Don’t be fooled by old stock tires. Tires are crucial for driving safety, so don’t skimp on the cost.
