^Exactly. The trend came about from smaller race teams using to keep heat lower in used slicks, extending their life and meaning they spent less money on tyres. Now, it seems to be status quo. The reason? As already said in this thread, Nitrogen does not expand when heated as rapidly as air does. This means that tyre pressure vary less - WHEN UNDER HEAVY LOAD. On the race track, this makes it much much easier to tune the pressure in your tyres to a track, suspension setup, driving style, weather etc. without the concern of tyre pressure varying during laps. More consistent pressure = more consistent handling = more consistent lap times = better chance of winning a race.
The reality on public roads is your tyres will never be subject to the kinds of extreme forces they are on the race track... negating any value in using Nitrogen for street use.
On the road, Nitrogen has little if any value. There are plenty of people who have made their own opinion based on getting their own facts (not reading forums or downloading consumer surveys) that tyres seem to last longer. I think the "lower need to top up pressure" is down to a better quality valve being used with nitrogen (included in the $5) - when i removed nitrogen from my last car as i was no longer tracking it but kept the nitrogen valves, i rarely had to put air in. However, from my own research and that of other people in the motorsport community, Nitrogen offers a clear advantage when used on the track. The disadvantage with nitrogen as a small tema is that you can't tweak pressures as easily during the day unless you take your own nitrogen cylinder with you.
I'd like to see something from Dingah and Maverick based on either their own track use of nitrogen or > 3 internet related articles saying that nitrogen has no value when used in motorsport. I would be interested to hear something contradicting my own personal experience, based on measuring pressure variation at two track days on my own car between nitrogen and air - cold measurements before each session, hot measurements at the end of each session. No more than 40minutes break between each session. Greatest variation over a day using air - 12PSI. Greatest variation over a day using Nitrogen - 2PSI. Yup, clearly no value there.
The reality on public roads is your tyres will never be subject to the kinds of extreme forces they are on the race track... negating any value in using Nitrogen for street use.
On the road, Nitrogen has little if any value. There are plenty of people who have made their own opinion based on getting their own facts (not reading forums or downloading consumer surveys) that tyres seem to last longer. I think the "lower need to top up pressure" is down to a better quality valve being used with nitrogen (included in the $5) - when i removed nitrogen from my last car as i was no longer tracking it but kept the nitrogen valves, i rarely had to put air in. However, from my own research and that of other people in the motorsport community, Nitrogen offers a clear advantage when used on the track. The disadvantage with nitrogen as a small tema is that you can't tweak pressures as easily during the day unless you take your own nitrogen cylinder with you.
I'd like to see something from Dingah and Maverick based on either their own track use of nitrogen or > 3 internet related articles saying that nitrogen has no value when used in motorsport. I would be interested to hear something contradicting my own personal experience, based on measuring pressure variation at two track days on my own car between nitrogen and air - cold measurements before each session, hot measurements at the end of each session. No more than 40minutes break between each session. Greatest variation over a day using air - 12PSI. Greatest variation over a day using Nitrogen - 2PSI. Yup, clearly no value there.
