I've tested and proven in the past that filling Nitrogen in our road going vehicle tires is of no use. But thanks to constant pestering by a friend who is a big fan follower of the Nitrogen filling brigade, we decided to perform the test once more with my TPMS interface so that I can "kill" the Nitrogen believer in him.
I thought I'll post the results here as well for the benefit of our wide audience.
MODS: In case you think this test deserves a separate thread, please feel free to fork it out a new thread.
Start: Removed old air as much as possible and nitrogen was filled on Wednesday evening to 2 diagonal tyres (in excess than required).
FL - Tyre-1 - Nitrogen
FR - Tyre-2 - Normal Air
RR - Tyre-3 - Nitrogen
RL - Tyre-4 - Normal Air
The next day morning (8:00 AM), I equalized the pressure in all tires to ~32.5psi and left it there in the basement parking.
Here is how the reading looks like at 12:00PM (Vehicle not driven since equalization)
You can see a mild increase due to ambient temperature rise. Also it looks like I didn't do a proper equalization with Tyre-4.
I was running towards a meeting and didn't have time to tweak it again. So lets take the starting pressure as 33psi for Tyre-4.
And here is how it looks after a 7km run to office (12:30 PM)
The truth is out there already but this is planned to be a long term test and I'll update the results as we progress through the testing...Keep watching this space.
PS: N2 filling charges are sponsored by my friend.