Tire air pressure - What Barack Obama suggests....

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Car tire air pressure 

Keep your tire pressures correct, and save the world! Not quite, but you will save youself money. 
Do you remember Barack Obama talking about how by just keeping your car tire's pressure at the manufacturers rating, we would save enough oil and not need to drill in. 
His arguement has very good grounding, but the figures are slightly out, as a video on youtube brilliantly explains. 

75'00 barrels of oil a day is still a lot, so here is a quick guide to keeping your car tire pressures correct. 
Why bother:
By law. 
Better fuel economy 
How and how often?
Look in your car manual, tire pressures are normally easy to find if not look in the index. 
If you have an air compressor, then you will just need a tire inflator. For home use, a hold on one is best. This way you just hold on/push on the inflator onto the inlet to break the seal and hold till you think the pressure is about right. Take the inflator away and check pressure, again. Try not to loose too much pressure when putting the checker on. Its a skill!
Do this for all four tires. 
I drive more than the average for year, about 20k so I check my tires every month or so. It soons becomes clear if one tire has a slow leak. 
Whilst you are there, check the depth gauge and for any signs or nails or punchers. 
If you do not have an air compressor, then you can use the tire inflators at forecourts for a small fee. Coin operated you have to use them your self. You may think i am bias and the forecourts around this way may just be unique, but I have not yet found a  decent inflator to use! They are not kept fully serviced and are very hard to use. 
You can get a tire checked from anyway. Halfords for example. I got a cheap little one from Tesco, that does the job. 

I hope this was helpful!

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