mythbusters tests tyre / tire pressure

[watercat]

So I made the run to Montana and back. Over it was two of us in the car with luggage and back it was 3 of us. when we rolled through Spokane and topped it off 46mpg and then 48 mpg. I have a trip on the west coats coming up that wont take me through the mountain pass and will get to see what it gets when it is in 5 gear all the time with just me in it. I can feel hi 50's with these new tires. after that test run i am going to try one of those cams that gives full torque from just over idle. I was one gallon short of making it from my house to missoula at 529 miles. I need a trip to Nebraska to really test it where its level.

[SentraSE-R]

^^^ Do we have to search all your posts to see what kind of car you're driving? What pressure was in your tires? How does your 46/48 mpg trip compare to your normal mpg? What did you do differently this trip?

[NHRABill]

I stopped posting in this thread because no matter what one person says 3 will try tell you that you are wrong no matter what you say. The argumentative nature of some is plain annoying. It takes the knowledge that we can be collectively sharing and destroys any positive gains that we could have from the discussion.

Just because you get the last word in doesn't make you correct. Remember why you opened the thread and the point of the topic and try and put a new idea or perspective on it that can be discussed in an adult like manner.

I am just waiting to hear the immature comments I get for posting this.

[watercat]

I'll post some specs later today its a 1994 geo metro liter but is not stock at all any more. my turning point on fuel economy seems to be taller tires and ignition timing. i have to say i am actually having to start over on the ignition timing and i can see i need to re learn new shift points with the taller tires to stop the ping. i have purposely been not trying to drive any different than the normal geo owner out there. Or at least any different than i normally drive. The big difference here on this trip and i wont know tell i take my next trip is that is was some of my best mpg and it occurred in the mountains at almost wide open throttle for hours at a time. the distance was 197 miles on this fill up. i shot a quick video with my flip phone. what didn't show was the car was totally packed down with people and gear. I was pretty excited we had talk about trying to get at least 25mpg on the way back and driving as fast as we could.

http://www.youtube.com/watch?v=Pm4Mvup43mo

I apologize for the music in advance i had to college girls in control of the stereo remote for the trip.

[UFO]

Originally Posted by NHRABill

I stopped posting in this thread because no matter what one person says 3 will try tell you that you are wrong no matter what you say. The argumentative nature of some is plain annoying. It takes the knowledge that we can be collectively sharing and destroys any positive gains that we could have from the discussion.

Just because you get the last word in doesn't make you correct. Remember why you opened the thread and the point of the topic and try and put a new idea or perspective on it that can be discussed in an adult like manner.

I am just waiting to hear the immature comments I get for posting this.

Now where is that baby picture link?

[NHRABill]

Originally Posted by UFO

Now where is that baby picture link?

you at least need to add something to the actual topic and then make the sny remarks....

Like:

I can't believe no one has mentioned Nitrogen yet?

Flatten your tires fill em' with Nitrogen to a Gazillion PSI and they will stay steady because nitrogen does not expand with heat like o2 does so no increase of pressure on a hot tire.

[UFO]

Originally Posted by NHRABill

you at least need to add something to the actual topic and then make the sny remarks....

Like:

I can't believe no one has mentioned Nitrogen yet?

Flatten your tires fill em' with Nitrogen to a Gazillion PSI and they will stay steady because nitrogen does not expand with heat like o2 does so no increase of pressure on a hot tire.

Your memory is failing you then, I have made many posts in this thread, useful too, if I may say so myself. And what's wrong with pointing out your whining? I get enough of it from my kids to know it when I read it.

And what is this nonsense about N2? Air is already 78% nitrogen, are you saying 100% nitrogen does not obey the ideal gas law? Oh, you are trying to take the thread off topic, never mind.

[NHRABill]

UFO Making an observation is not whining

Using Nitrogen instead of air in your tires is on topic if you pay attention. Seen as you rather be confrontational instead of doing a simple search here is a site with a video from Jay Leno to explain the benefits of using nitrogen in your tires and how it can save you fuel.

Nitrogen in Tires : Information about Nitrogen Tire Inflation News, Benefits, Generator Dealers, Location Finder & More

The added cost of using nitrogen in my tires is of very little to almost no benefit seen as I drive so little these days but if I were a commuter who drove a lot and was replacing a set of tires with new I would opt for it.

[UFO]

Originally Posted by NHRABill

UFO Making an observation is not whining

Using Nitrogen instead of air in your tires is on topic if you pay attention. Seen as you rather be confrontational instead of doing a simple search here is a site with a video from Jay Leno to explain the benefits of using nitrogen in your tires and how it can save you fuel.

Nitrogen in Tires : Information about Nitrogen Tire Inflation News, Benefits, Generator Dealers, Location Finder & More

The added cost of using nitrogen in my tires is of very little to almost no benefit seen as I drive so little these days but if I were a commuter who drove a lot and was replacing a set of tires with new I would opt for it.

Whatever helps you through the day. I am making "observations" as well. Good luck on that nitrogen scam.

[CapriRacer]

Originally Posted by NHRABill

....Using Nitrogen instead of air in your tires is on topic if you pay attention......but if I were a commuter who drove a lot and was replacing a set of tires with new I would opt for it.

To try to addres the issue of nitrogen, I've complied the best testing I could find:

Barry's Tire Tech

Bottomline: Nitrogen by itself doesn't do anything of real value for street usage that good pressure maintenace doesn't also do. If you get Nitrogen for free - Cool! But don't pay extra for it.