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Will it make a car or vehicle lighter if its tires are filled with helium and thus in turn more energy efficient?
Wiki User
∙ 13y ago
It will, but only barely noticably, and will only offer a negligible increase (if any) in fuel economy and only for the first few hours. The reason being, that the helium molecule is so tiny, that the rubber tire, like helium balloons, cannot contain them for long. The molecules actually pass right through the rubber and escape, leaving you with a flat tire and therefore higher fuel consumption.
Compressed air actually does the same thing, that is, escape, over a longer period of time. Nitrogen gas is actually becoming a popular way to fill tires for better performance, wear, and fuel economy, because it is such a large molecule and takes much longer than air to escape the tire. Nitrogen also has the added benefit of keeping the tire cooler overall, also improving fuel economy and tire wear.
Wiki User
∙ 13y ago
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