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I believe you are correct.
The Nitrogen tire testing was more controlled.
The gas mix tire was heated by the sun and aluminum reflector.
My difference between the N2 tire test and the gas mix test was about a half PSI difference between the 2, that difference was likely caused by even heating of the N2 tire versus the uneven heating of the gas mix tire.
The gas mix test scope was to heat the tire up as much as possible from the base line to see if there were any wild pressure swings.
I thought there would be a much wider pressure swing with the R-404a mixture, because of the way refigerants act in a refrigeration system.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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