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If every American made this change we would save 40 million gallons of gas everyday.

COCKTAIL FACT

The Department of Energy estimates that we are spending an additional $9,000,000 on fuel each day due to improperly inlfated tires.

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home ›   tip library ›   Tire Pressure

Interested in improving your gas mileage without buying a new car?

The Bite

Ensure that your tires are inflated to the correct PSI by checking the pressure once a month. (Each tire should be imprinted with the appropriate PSI number, aka: pounds per square inch).

The Benefits

  • You can increase your gas mileage by 2 mpg.* Over a year, that will save the average driver $60.
  • The average life of your tire is extended by 15%.

Personally Speaking

Since we don’t have the money to go out and buy new Toyota Prius hybrids (and can’t really keep to the 55-mph rule for gas efficiency no matter how hard we try), this 5-minute test each month helps us feel a lot better about our summer road trips.

Wanna Try?

It only costs around $10 for a tire gauge, and fortunately, they are available in nearly every gas station and auto parts store. If you want to buy one now, we like this one from Sparkle Auto, available at Amazon.

Jun 20,2005


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All editorial suggestions in this tip are the result of testing and a preference for the tip topic. No advertiser has paid to have its company referenced in the tip. For more information, please read our Editorial Policy.


How to Avoid Feeling Like a Dumb Sissy

Tire_pressure The other day, when I arrived home from New York, I was shocked that I all of my luggage arrived, as did I, without event. But when I got to my car I realized that - of course it would not be that easy - I had a flat! As many times as I had watched my father change a tire, and even received lessons from him and a few boyfriends, I was now in a business suit, with lots of luggage, and I was hungry since the airlines think that small bags of lousy pretzel nutty things will suffice on three-hour flights.

It was then that I kicked myself - not the tires - for not having checked them since it was a slow leak caused the flat (it was a 14 day trip). Checking the PSI is such an easy thing to do, and I know all the stats about driving with your tires properly inflated, but here I stood, feeling a bit like a big sissy for not rolling up my sleeves and changing the tire, and feeling a bit stupid for not having checked the pressure more regularly.

As I waited for the Bozeman Sheriff's department or AAA to come to my rescue (I called both, it was really a matter of who came first . . . did I mention I was hungry?), I pondered the fact that tires are these beautiful yet awful things... they get you where you need to go, and don't ask for much. Yet, tires are one of those whacky inventions that will be here longer than cockroaches if we have an atomic blast... they just pile up. In the state of CA, some 33.5 million reusable and waste tires are generated each year. Someone once told me that a company invented tires that don't wear down, but then a big tire company bought them up and shut them down because that would have killed tire sales. That sounds a bit more conspiracy-theory than I generally believe... but who knows?

On a lighter note, it seems like more and more uses are being created for tires, like turning them into carpets, floor mats, irrigation pipe, lumber, office supplies and playground covers. I believe that the footing in the indoor arena where I ride has some recycled tire; it is nice footing except for when a horse urinates you have to sop it up, since tire particles aren't known for their absorbency. Anyway, point being, I am going to check my tires more often, so I can keep them longer, save on gas, and most importantly, not be stranded feeling like a dumb sissy.

-Off to look for the everlasting tire (Willy, you out there?) -
Jen


Biter Comments...
Definitely keep up with the tires - but also try using some of the worn out tires by buying recycled tire products - my personal favorite is the Vulcana bag (or lugguge or wallet) http://www.vulcanabags.com/
Thanks Michelle! Great tip! You should submit it at the Ideal Bite.com ;-) And I loved the Prada-sque bags, for 1/5 the Prada cost! Plus, I bet they will last longer! https://www.vulcanabags.com/store/item.asp?ITEM_ID=14&DEPARTMENT_ID=3 - cheers, Jen
Hey Jen, Great Bite! One thing I would add it filling your tires with Nitrogen. The Nitrogen molecule is much bigger than regular 'air' molecules and thus, leaks out slower. You're tires will stay at the proper PSI longer, which as you pointed out, will save both money and pollution from being created.
Shea, Sounds like a neat option, but... Air is already 78% nitrogen by volume; most of the remainder is oxygen (21%). Any difference in size between the dinitrogen molecule and dioxygen molecule (N2 and O2), actually leans toward oxygen being the larger molecule (the bond length between the two atoms is about 10% larger in O2). Regardless, this difference is definitely a non-factor. That being said, where would one find someplace to fill tires with pure nitrogen?
Hi Mike, I did a quick Google search on 'nitrogen tire' and found this article: http://www.tirebusiness.com/subscriber/opinion2.phtml?cat=3&id=1082990463 I don't remember where I first heard about filling your tires with Nitrogen, but from everything I've read, it's legit. I guess it's not widespread, but is a growing option that some car dealerships and gas stations offer.
Nitrogen is more stable that oxygen, that means it reacts much less. While oxygen can react in many ways (without knowing what it can produce) this probably isn0 the main reason to usd Nitrogen. I believe the main advantage is that it changes less when the tire gets hotter and it doesn't burn in case of an accident. I know a couple of places when u can get nitrogen for your tires here in mexico so I guess usa should have at least the same as us.
Shea and Sayel (and anyone else out there), Well, ya learn something every day (if we're lucky).. A little googling and the evidence starts to fall into place. Once one weeds out some of the more crack-pot and sales-heavy sites, one can still find a benefit to use of pure nitrogen in tires. The info that made the most sense to me I found here: http://www.tirelast.com/id5.html Seems like it's more a combination of the normal oxygen present in compressed air, combined with any residual water from the compressors' tanks (though most compressor manufacturers highly recommend one or more methods of drying the air prior to compression, or periodically removing any water from the tank; moisture and compressed air in a metal container equals rapid damage to the walls of the tank!) leading to oxidative damage to the tire, migrating from the inside out. The damage reduces the plasticity of the tire, leading to a more rigid tire, susceptible to tiny cracks, etc. Additionally, the oxidative reactions lead to particulates within the tire itself, which can end up in the tire stem assembly, leading to slow leaks as the tire stem cannot make a perfect seal with the particulates gumming things up. So, it seems that filling tires with pure, nitrogen does remove the two factors leading to rapid tire degradation and leaking. That said, the most frequent cost I read was around $10/tire to fill with nitrogen (if you can find it, many of the articles I found claimed to have never seen a commercial establishment that offered a nitrogen tire-filling station). I wonder if one could achieve some of the benefits of a nitrogen fill by finding a location that carefully maintains their air compressor to limit the amount of water that would enter the tire during pressurization...
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