This is a stupid question..
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Melting Slicks
Joined: Oct 2003
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This is a stupid question..
Do wheels weigh the same full of air, as they do without air?
I packaged up some rims w/ the tires mounted, and forgot to let the air out..
Should I open it and start over?
I packaged up some rims w/ the tires mounted, and forgot to let the air out..
Should I open it and start over?
Melting Slicks
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From: MDT
without any intent to provide a scientific or even correct response, it seems that air, being the liquid that it is, is affected by gravity and as such has weight. given the size of the average c5 tire & wheel, i tend to think that it does add weight & will cost you more to ship. now whether it's worth opening, purging, & repacking is a different issue. again, i'll defer to the pros to provide an accurate response. bub
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Yes, air does add weight, but not enough to worry about IMO. You could always take one wheel and do a before and after weighing of the wheel/tire to see what the difference is.
Cherish your Hopes...
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Originally Posted by JDs00PewterCoupe
Yes, air does add weight, but not enough to worry about IMO....or the barametric pressure at the time....how about the humidity level...
now I have to think about the altitudinal ramifications...
...does thin air really make a difference...
oh yea...
Le Mans Master
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From: The problem with socialism is eventually the government runs out of other people's money
Originally Posted by Eddyd
You could fill them with helium & it would be cheaper to ship 
Melting Slicks
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From: How the hell can I make it faster???
Originally Posted by Eddyd
You could fill them with helium & it would be cheaper to ship
Oops, that's right, I almost forgot.. that stuff blows up
UPS might not like that in their little brown trucks
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
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If you have 35 PSI in each tire that's an additional 140 Lbs that you're shipping.
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
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Wait, if each tire has a volume of maybe 200 cu. in. (just a wild guess) times 35 pounds per square INCH, that would be an additional 7000 lbs per tire!
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From: Haymarket VA
Since you have to pressurize air in your tire you are actually increasing the weight of the volume of air. I would recommend that you remove the air and use a non-compressable substance like water since you will not increase the weight through compression.
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
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Are they runflats? If not you have to have air in them to move them.
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
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Are you shipping air or ground? (or water?)
Drifting
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From: Winter Park Fl
Do wheels weigh the same full of air, as they do without air?
No! Air weighs alot. It is measured by the pound isn't it? You usually put 30 pounds in each tire so......
No! Air weighs alot. It is measured by the pound isn't it? You usually put 30 pounds in each tire so......
Last edited by ROADAPPLE; Jun 17, 2005 at 08:34 AM.
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My wheels need air? OMG, better take it to the dealer - never put air in the wheels since I've owned it. What pressure do the wheels take? I know the tires take 30psi cold, but what about the wheels?
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From: Columbia MD
Edited (yes I am a geek!):
The air weighs the same whether its in the tire or in the box.
Atmospheric pressure is about 15 psi. Density of atmospheric air is 2.7 lb per cubic meter.
If you inflate to 30 psi cold, then you are effectively doubling the density to 5.4 lb per cubic meter.
If you didn't pressurize the tires, you could save about 2.7 lb per cubic meter of tire volume.
If you evacuated the tires of all air (vacuum), then you could save 5.4 lb per cubic meter.
The air weighs the same whether its in the tire or in the box.
Atmospheric pressure is about 15 psi. Density of atmospheric air is 2.7 lb per cubic meter.
If you inflate to 30 psi cold, then you are effectively doubling the density to 5.4 lb per cubic meter.
If you didn't pressurize the tires, you could save about 2.7 lb per cubic meter of tire volume.
If you evacuated the tires of all air (vacuum), then you could save 5.4 lb per cubic meter.
Last edited by michach1; Jun 19, 2005 at 06:55 PM.
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
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Originally Posted by vetdude
My wheels need air? OMG, better take it to the dealer - never put air in the wheels since I've owned it. What pressure do the wheels take? I know the tires take 30psi cold, but what about the wheels?
