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April 6, 2006
Hug a Tree: Green Stem Caps?
When we picked the car up at Costco after getting the tire replaced I noticed that all of the stem caps on the tires were green. I was used to seeing black or grey, green was noticiably different. They also gave me a window sticker to let me know when they should be rotated.
On the sticker was a note: Your tires have been filled with nitrogen. I found that rather odd, but figured it was something new. I checked into it and nitrogen has a number of benefits and has been mentioned on a few earth friendly sites as well.
Claimed benefits include:
- Retain tire pressure longer - seepage is 30-40% slower
- slower tread wear (as a result of proper inflation)
- better gas mileage (again as a result of proper inflation)
On the other hand, some people say that these claims are untrue and others say that there's less moisture in the nitrogen filled tires which leads to the results above. Who knows...and honestly, I'm not that concerned, I just think it's weird to have nitrogen in my tires - even though the other car (filled with regular air) has 78% nitrogen.
Posted by Jesse at April 6, 2006 12:47 PM