If another gas worked better than nitrogen you better believe they would use it-regardless of cost.

You're trying to tell me that racers use logic for all of their decisions?

If they thought a dead chicken under the hood made them run a tenth of a second faster per lap, there would be chicken buckets under all of their hoods.

I made a living building, preparing and sometimes driving race cars for over 10 years. Logic always prevailed over dead chickens.

Argon in the tires would almost certainly be better than nitrogen. The same gas laws apply, but the larger molecule will leak even less.

But racers don't use argon. That's an expensive gas. Nitrogen is dirt-cheap.

But racers don't use argon. That's an expensive gas. Nitrogen is dirt-cheap.[/quote]


Not in Mississippi it ain't!! And my wife has 4 tires to prove it!!LOL

Leakage of this sort is not an issue in racing. If it was, argon would be used.

Night air is even better than nitrogen or argon. Makes you go faster.

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

What happens when the tire loses pressure and you're not near a nitrogen source, say on a trip? Can compressed air be mixed to inflate to pressure?

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1986 560SL
2002 Toyota Camry
1993 Lexus

If they used helium would that make the car lighter?