JamieJT

Are the C7 tires air or nitrogen filled ?

millpond

Just air.

meyerweb

You might find this thread interesting:

https://www.corvetteforum.com/forums...sensus-on.html

Rooster OG

It's a special mix of nitrogen filled air.

speedlink

Zymurgy

They are filled with roughly the following gases by volume and %:

rcooper

The above post shows that they are filled with air....cheap, easy and free. Works well, as about 100 years of practice have shown.

mtaxman

If just "air" What is the point of my Dec 1 delivered 2016 having a NitroFil flyer and NitroFil valve caps.
I am not saying this stuff does anything but it seems the factory- not my dealer - sent the car out the door this way.

HoustonMidtown

My 2016 came with NitroFil valve caps also...

OnPoint

If you can get Nitrogen free, that's ok.

Just don't pay any money to put nitrogen in your tires.

robert miller

If you can put in 100% nitrogen by what is said it will hold the better pressure better than just air. The nitrogen will work better also in the diff temp's chg's in the tire.

meyerweb

http://www.nitrofill.com/

"Available at leading automobile dealers and service centers everywhere."

Definitely dealer installed, not at the factory.

meyerweb

Nitrogen pressure changes with temperature just as does every other gas, or mix of gasses. Period. Google the Ideal Gas Law.

The only thing that can make a difference in terms of pressure rise is IF the nitrogen is truly dry (no H2O) and the plain "air" is humid. As the tire heats up, the water in the humid air can vaporize, increasing pressure more than a dry gas will.

Will it hold pressure better? Marginally. Nitrogen molecules are bigger than Oxygen molecules, so the O2 will diffuse through the rubber slightly faster than do the nitrogen molecules. But as others have pointed out, regular "air" is 78% nitrogen anyway, and even if the nitrogen your dealer adds to your tires is pure, they don't evacuate the tire of all the plain "air" first, so you still have a mix of nitrogen and "air" in the tire.

Even if you could get the tire filled with pure nitrogen they will eventually lose pressure, and the pressure will still vary with temperature so you still need to check, and top off, your tires.

The minor advantages of nitrogen simply aren't worth paying for.

Glenmcp

Air. The rest is doing something just to feel good. But, if you are sold on it, go for it.

txapezl1

I'd recommend Helium instead.

LanceVette

If nitro is good enough for race cars, then it's good enough for me. I know, I'm not racing, but it's free.

DickieDoo

yeah reduces unsprung weight

patriotpa

Unless they evacuated ALL the air 1st, you still have other gases besides nitrogen in your tires.

...and pulling a high vacuum on a car tire would almost certainly break the bead loose.

Snake oil.

Zymurgy

Pulling a high vacuum on a car tire would almost certainly damage the internal tire structure. Definitely a big no-no.

meyerweb

You just need to drill a hole in the rim and add a second valve stem. Pump nitrogen in one while sucking "air" out the other.