What is the name of the gas used to fill in vehicle tyre tubes?

Answer 1

It's compressed air
The air we breathe, and the compressed air normally used to inflate tyres, is mostly nitrogen anyway – 78% Nitrogen, 21% Oxygen and 1% other gases.

Answer 2

Air. Some places are now using nitrogen (which is the major ingredient in air).

Answer 3

Nitrogen is an inert gas which doesn't have any moisture in it. Nitrogen molecules are larger than the 20% oxygen in our atmosphere. Nitrogen does not expand or contract as much as gas station air. Speaking of gas station air, nest time you're there, *ask anyone when was the last time that the air compressor tank was drained. Air compressor tanks fill with water from the atmosphere which finds its way into your tires corroding the inside of the wheels as well as your expensive tyre pressure monitors.

Answer 4

My tires have green valve stem caps which indicated they should be filled with nitrogen.

Yeah, right; I just use compressed air !!

Unless you are running at 200 MPH on high performance tires in 105*F weather you are wasting time and money putting in nitrogen.

But when I owned an airplane I religiously used Nitrogen in my aircraft tires because it's not affected by changes in altitude or temperature.

Answer 5

Air or nitrogen.

Answer 6

True air is virtually 80% nitrogen and 20% oxygen with <1% other gases. Compressed air lines often contain water. Liquid water turning to vapour, produces a much bigger pressure change than just heating a gas. This is hardly noticable for normal driving but for racing and aircraft is can be a problem, so pure nitrogen is used as it is more predictable.
It has nothing to do with leaking less or lack of oxygen degrading your tyres slower.

Answer 7

The fancy, expensive "gas" is almost 100% NITROGEN.

The regular, almost free "gas" that most people use is simply compressed AIR, which is about 78% nitrogen, plus oxygen and several other gasses.

-Engine overhaul mechanic and general automotive mechanic since 1972

Answer 8

Most people just use compressed air.

But you can use nitrogen. Nitrogen doesn't leak as quickly and also the temperature doesn't fluctuate as wildly compared to compressed air. This is beneficial for extreme driving such as racing.

Answer 9

Air. ___________________________

Answer 10

You use AIR to fill an inner tube.