When shopping for a new set of tires take a look at the tires themselves. You will notice that on the sidewall there are a series of numbers in front of the word “DOT.” If you see the number 1214 that means it the tire was made on the 12th week of 2014.
For years, people have relied on tread depth to determine when to replace a tire. If the tread passes the "penny test," they assume the tire still has life, regardless of how old it is, which can be a fatal mistake. Old tires are dangerous, regardless of tread depth. While there's no federally sanctioned safety guidance on when a tire is too old to be safe, many carmakers recommend replacement at six years from the date of manufacture.
Old tires have been the culprit in fatal accidents. Here are just two examples:
In 2008, the owner of a 1998 Ford Explorer in Georgia needed a new tire for his SUV and bought a used one. When he was driving two weeks later, the tread suddenly separated from the tire. The Explorer went out of control and hit a motorcycle, killing its rider. An analysis of the used tire revealed that the tire was nearly 10 years old.
In a more recent and high-profile example, the investigation into the cause of the 2013 accident that killed the actor Paul Walker revealed that the Porsche Carrera GT in which he was riding had 9-year-old tires. The California Highway Patrol noted that the tires' age might have compromised their drivability and handling characteristics, according to the Los Angeles Times.
本想換下的右後輪作為備胎，每年冬天都得掉坑裡破兩個輪胎。回家一看，都嚇出一身冷汗。輪胎的一條又大又深的裂痕幾乎穿透整個輪胎。隨時都有可能爆胎。圖如下：
When shopping for a new set of tires take a look at the tires themselves. You will notice that on the sidewall there are a series of numbers in front of the word “DOT.” If you see the number 1214 that means it the tire was made on the 12th week of 2014.
有二家牌子 Cooper 和 Pirelli 提供 unlimited time 保証,也就是說像這樣的情形,廠家可以永久免費提供更新或按remaing depth比例退還。而Yokohama的年限為5年
所以賣胎網站的资料顯示不正確,並不是unlimited time. 至於Pirelli Tire的 Warranty book倒真的沒有提到時間,完全以里程為保證期標準。另外就是同一牌子,不同型號的胎,除了里程保钲不同外,時間也可能不同
For years, people have relied on tread depth to determine when to replace a tire. If the tread passes the "penny test," they assume the tire still has life, regardless of how old it is, which can be a fatal mistake. Old tires are dangerous, regardless of tread depth. While there's no federally sanctioned safety guidance on when a tire is too old to be safe, many carmakers recommend replacement at six years from the date of manufacture.
Old tires have been the culprit in fatal accidents. Here are just two examples:
In 2008, the owner of a 1998 Ford Explorer in Georgia needed a new tire for his SUV and bought a used one. When he was driving two weeks later, the tread suddenly separated from the tire. The Explorer went out of control and hit a motorcycle, killing its rider. An analysis of the used tire revealed that the tire was nearly 10 years old.
In a more recent and high-profile example, the investigation into the cause of the 2013 accident that killed the actor Paul Walker revealed that the Porsche Carrera GT in which he was riding had 9-year-old tires. The California Highway Patrol noted that the tires' age might have compromised their drivability and handling characteristics, according to the Los Angeles Times.
正好領導長途接孩子，又因其中一個輪子已經鼓包。當時想其他輪子任何時候也可能會鼓包，是個很大的潛在危險。因此很果斷地把其他3個一塊給換了，圖個心安。