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I asked my salesman if the tires had nitrogen in them, he said yes.

My super duty has nitrogen with blue caps to signify. No blue caps on stingray.

So I not sure!
 

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At least 78% of the air in the tires is nitrogen. The remaining 22% is likely oxygen, carbon dioxide, argon, etc. Though I am curious if GM would actually spend the extra $$ to fill the tires with pure nitrogen.
 

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StingRays do not come from the factory with nitrogen in the tires. If you dealership had installed nitrogen as a "nice and free add on," then your car has nitrogen. If that did not happen by your dealership's service department, your salesperson is wrong.
 

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Tirerack has a good article on nitrogen in tires. http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191

This ending line sums it all up. "Rather than pay extra for nitrogen, most drivers would be better off buying an accurate tire pressure gauge and checking and adjusting their tire pressures regularly."


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RedHot runs nitrogen in her tires as do all of my cars. I have been doing this for quite a few years. Personal experience has been the tires require far fewer 'touch ups' to maintain the air pressure where it should be. I still check my tires regularly with a very accurate digital gauge. Also have found that they drop slower when the ambient temperature drops and heat up slower when I do high speed driving. However this is the first set of run flats that I have done it with. :cool:
 

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Tirerack has a good article on nitrogen in tires. http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191

This ending line sums it all up. "Rather than pay extra for nitrogen, most drivers would be better off buying an accurate tire pressure gauge and checking and adjusting their tire pressures regularly."
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That is been my approach for a good number of years for all my 2 & 4 wheel vehicles. It's no big deal to check pressures periodically. Having an accurate tire gauge is important regardless of which gas you use. I have found that I can (to a limited degree) encourage better tire wear by adding or subtracting a couple of lbs. of air pressure in a given set of older tires. I have found this strategy more useful on my 4X4 trucks, but it seems to help to a lesser degree on my S2000 as well.
 
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