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nitrogen
May 21, 2004

Oh, what's a 217°C difference between friends?
Your tires and you: More info than you ever wanted to know about tires:

How to know if your tires need to be replaced:
Most American states (and provinces in Canada) mandate at minimum 1/16 inch (1.6mm) of tread. Easiest way to tell?
In America, if you put a penny in the tread upside down, and if you can see the top of Lincoln's head, you need new tires (legally)
In Canada, if you can see the word "elizabeth" on the penny you need new tires.
in England, if you can see the queen's head on a british penny, you need new tires.

1/16 of an inch is honestly too low of a tread to be safe. Consumer reports suggests a minimum of 1/8 of an inch of tread for safety, especially if you drive in wet weather a lot. To see 1/8 of an inch:

In America, use a quarter. The distance from the quarter's rim to George Washington’s hairline is about one-eighth inch. If you see George’s head, consider replacing your tires.

Brits or Canadians, on yourpenny, you would see the top of the Queen's forehead.

What do all the codes on my tires mean??

What the numbers mean: tire sizing:
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=46
TL/DR: cross section in mm/aspect ratio/wheel diameter. Lots more info above.

Uniform Tire Quality Grade:
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=48

Finding the age of your tires:
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11
(don't be like me and buy a car with 4 year old tires on it!)

Whats wrong with my tires??
http://www.dummies.com/how-to/content/checking-your-tires-for-wear.html

Info on snow tires (which I know nothing about):
http://cars.about.com/od/adviceforowners/a/snowtires.htm

Something to keep in mind when buying "road hazard" warranties: Remember, most are only good for one year, and then are prorated. Keep this in mind if you want to buy road hazard warranties.

Some tires already come with them.

Should I pay extra for my tires to be filled with Nitrogen?
No. Nitrogen is 78% of the atmosphere. your tires are already filled with Nitrogen.
if you're a member at Costco, go ahead and let them fill your tires up with Nitrogen for free.

nitrogen fucked around with this message at 20:44 on Oct 5, 2010

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