Do you know the tire pressure would vary with temperature? The tire pressure must be a little higher in winter. . According to the statistics, almost 50% of the tires failures are caused by under inflation. If the vehicles are still moving with underinflated tires, it would make the internal tires deformed, and heated up gradually. The tire pressure would go up with increasing heat accordingly, finally lead to the blowout. Drivers have batter form a good habit of checking the tire pressure periodically. If you can’t check the tires pressure status visually, a well performed tire pressure monitoring system is a suggestion for tires safety. Also you can go to 4S shop to have a check on tires status every month or half month.Some drivers keep using the out of date tires thinking of they are not fault. Actually it’s at very high risk if you keep using the out of date tires. The life span of tires is about 2 or 3 years or 60,00 km mileage. The tires of out of life span or heavy wear should be replaced in time. The rubber has 5 years life span. The usage and storage condition would much affect the tires life span. So keep an eye on your vehicle tries, replace these aging, hurt and heavily worn tires.