Tips to Improve Your Gas Mileage on the Highway

[youspic]

good video man, what car are you driving? is it stick? do you use a scangauge?

[eren316]

Nice vid :) what car do you drive?

[jorymil]

@kitaimdao: Cold weather can't compress the air in your tires--their volume remains roughly constant (your tire stays about the same size). Rather, the cold weather lowers the pressure of the air in your tires. You're holding the volume of the air and the amount of air constant, so pressure's the only thing that changes.

When you add air to your tires, the temperature's roughly constant, as is the volume of air (your tire doesn't change size much), so the pressure increases.

[mikerothwell247]

@jorymil cold weather absolutely reduces the pressure AND volume of your tires. look at the ideal gas law PV=NrT. P=pressure, V=volume and T=Temp (N and r don't matter for this). so what happens if you lower T? the other side of the equation must balance out so P and V must reduce since the tire is not a solid object. you would be right if the tires were made of steel. Though, of course, P changes a lot more than V since the tires can't change size like that easily.

[WNDC]

Goddam, dude. Spit it out.

[slipperyduece]

The pressure your car says to fill your tires up to is the correct level. If you over fill you will have uneven tire wear. The tag or sticker in your door jam is the calculation of your vehicles weight and manufacturer spec

[authmaax]

what car is that? w/ what mods?

[cb1ryder]

Have you ever considered turbocharging? Many years ago, I fabricated a turbo kit for an Acura Integra. During emissions dyno testing at an EPA approved lab, we saw 25mpg in stock trim, and 29mpg turbocharged. Mind you, the test cycle was all light load; I don't think the engine ever saw boost. The owner did report similar improvements using it as a daily driver.

[Jesus45U]

@cb1ryder

SAAB has been using low preassure turbochargers for many years, in order to improve fuel economy. In fact, most modern Diesel engines use low pressure turbo chargers nowadays for that exact same reason. :)

[subinct]

you sound like Adam Sandler

[oldoldoldoldold]

sup dawg

[kitaimdao]

You probably know this, but I saw a post on EcoModder from a Canadian who said the cold weather compressed the air and deflated tires. It's something to think about in the winter. I've never inflated my tires. My father probably does it for me

[EcoModderDOTcom]

Yes, this is the case when you are not driving. During driving they heat back up. However, tire pressure will read lower before you drive, so it becomes easy to accidentally overinflate during the winter.