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Old 08-14-2011, 07:20 PM   #11
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Sounds like a job for the Mythbusters!
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Old 08-14-2011, 07:33 PM   #12
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Quote:
Originally Posted by Nigels View Post
I'm going to fill my tires with golf balls and sand and that will solve all my problems

You just invented a "budget run flat" tire. Errrrr good luck with that.
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Old 08-14-2011, 08:41 PM   #13
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I love this forum because it yields so many great ideas. Looking at the periodic table, I'm thinking I'll inflate my tires with Hydrogen, and offset some of the load I'm carrying.
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Old 08-14-2011, 08:57 PM   #14
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We used nitrogen on our Air Force aircraft all the time. It helped maintain the pressure and temp. I have also used it while racing in the SCCA and found the same results.
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Old 08-14-2011, 09:28 PM   #15
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I love this forum because it yields so many great ideas. Looking at the periodic table, I'm thinking I'll inflate my tires with Hydrogen, and offset some of the load I'm carrying.
No way....... remember the Hindenberg disaster you don't want that to happen at 70mph with your Chinese trailer tires, far too dangerous...........Helium is the way to go!

Failing that N2O Nitrous Oxide if you want a good laugh or bit more Horse Power in your tires
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Old 08-14-2011, 10:57 PM   #16
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I love this forum because it yields so many great ideas. Looking at the periodic table, I'm thinking I'll inflate my tires with Hydrogen, and offset some of the load I'm carrying.
h2 will penetrate metal.
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Old 08-14-2011, 11:06 PM   #17
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"We have used nitrogen in our Racing car tires for years..... and trust me the heat or cold doesn't effect the pressure settings as it does compressed air.....and we were making 1/2 lbs. changes in tire pressure to change the handling of the race car. It was not possible to do that with just compressed air !! So if you truly have Nitrogen air in your tires they will NOT increase double the original pressures. Race teams use nitrogen just for the reason....Heat doesn't effect it as much !"
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Did you have tire pressure monitors? Well, I do, and they indicated the nitrogen filled tires had a larger change in pressure.
As for race cars, if nitrogen doesn't expand, why do nascar cars handle differently with cold tires?
I think I'll believe a proven fact rather than an opinion.
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Old 08-14-2011, 11:55 PM   #18
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Nigels,


Beg to differ. Nitrogen doesn't burn or explode. The Hidenberg was full of hydrogen, which is very burnable. N2O is also very flammable, as it contains oxygen, and why it is injected in to cars to gain 30 to 40% more horsepower, at least in short spurts, right before the engine blows.

I actually wish this discussion would die, as there are several threads on here about it. Run it, or don't, your money, your choice. Tires are still designed today to run with compressed air, 78% nitrogen, 20% oxygen, and 2% other stuff, which is what we breathe, They take in to account the pressure change for heat, pressure build up, and other factors. Why do you think they all say "COLD INFLATION"? Yes, nitrogen tires have less pressure change with temp., but is that better? It could be that the tire never gets warm and builds to proper temp/inflation and that is why they blowout. As for the reply on race cars, different tire, different rules, and you are going to change them in 100 miles anyway, so it doesn't apply here.

Note to moderator, start a poll, if you have had a tire blowout in the last 12 months, were your tires filled with nitrogen? Add in date of blowout, date last pressure check, and did you check the tire tread and sidewalls, and speed at which traveling. Let's quit with opinions, and get some data, then we can make a decision with data to back it up.

And keep track for the next 12 months.
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Old 08-15-2011, 12:20 AM   #19
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Race cars need to get heat in to tires to make them sticky, so they stick to the black top better for cornering, they preheat them in ovens and blankets before putting them on the car and then on the car the car needs to race to keep the heat up at the correct temperature for maximum grip. Cold tires will not be sticky and will have little grip.

What has pressure got to do with this? Too much or too little pressure will affect the contact patch that the tire has with the road, same as a street car too much pressure creates an oval proifile and a centre only contact patch, less grip and wear in the centre only, too low pressure = less grip and wear on the shoulders and the sidewall flex can increase the heat in the tire more than is wanted. Race teams have to juggle both initial and expected tire pressure and tire temperatures combined with track temperatures and track configuration to maximise grip in corners and max straightway speeds.

It is recognised, and race teams know this, that Pure Nitrogen is more suitable than air, in tires under pressure that is, because it does not expand or contract as much as air when affected by heat, so they use it to prevent the ever so slight "unwanted" increase or decrease in tire pressure that may change the tires shape and contact patch. We are talking micro amounts here that only affect serious racing teams looking at miiliseconds in lap times!

So it is true that the OP's opinion that Nitrogen in his truck (trailers and cars included) tires is a waste of time, however because we are talking very small amounts of temperature and pressure and readings need to be instant and simultaneous on all four tires with sophisticated equipment then our attempts at measuring this ourselves will be futile and at best misleading.
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Old 08-15-2011, 12:28 AM   #20
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Windrider ???? I was refering and joking with the post about filling tires with Hydrogen when I refered to the Hindenberg, that burned not so?
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