This article is taken from a slide show presented by one of the oil company at their HSC weekly general safeety meeting...
Most of us operate motor vehicles on daily basis and hardly ever pay any attention to one of the most vital parts of the vehicle – our tires
This number indicates that the tire was manufactured on the 7th week of 2007 (Feb 2007) and that the expiration date in February 2011.
Expired tires are likely to burst and result in a very serious or even fatal accident. A good practice will be for us to checks our vehicles tires and make sure they have not passed their expiry date.
On the side of the tire, you will also find the maximum allowable inflating pressure for specific tire, some tires have a maximum pressure of 32 PSI, some are rated at 44 PSI and some even at 50 PSI. A few pounds below maximum allowable pressure is acceptable but not too much ( ? please check your car specification for tire pressure – check with you friendly foreman?). Different tires are designed for different pressures and you will find your maximum tire inflation pressure on a small number next to the rim on the side of the tire, NEVER exceed this pressure.
Lower pressure increases tire heat, infrared photography of tires tested at high speed shows that damaging heat increases as pressure drops.
Another important point to consider is the load we put on our tires..
Exceeding the maximum rating on a tire may lead to tire failure that could result in an accident.
The speed rating that a tire is designed for is indicated by a letter next to the load index ( T -in the above picture). Table below shows the speed rating in km/h & mph. Exceeding that speed limit also may hasten you to place you do not preferred to be ;).
Many of us when we go and buy tires , we just read it from the old tire and gave them to tire shop, but what do those number mean?
There are few other things that are good for you to know especially if you are buying imported second hand car.