* Tire manufacturers provide built - in wear indicators, frequently called wear bars, to indicate when your tires have reached the end of their useful life.
* टायर - उत्पादक, टायर में ही ऐसे इंडिकेटर बनाते हैं जिन्हें अकसर वियर बार्स्‌ कहा जाता है ।