You might be able to increase tire temperatures slightly with an Argon fill.
Argon is used as thermal and sound insulation between the layers of glass in higher end windows.
In a tire it should help keep the heat in the tires tread, since Argon offers lower thermal conductivity than air.
An Argon tire fill wont elevate temperatures to an unsafe level since there is a least one OEM that I know of who fills tires with Argon from the factory.
Lexus Argon fills their tires from the factory to reduce road noise, to at least help get the car off dealers lot.
A standard argon welding bottle regulator puts out right about 50psi, enough pressure to fill any car tire, any load range C and most LT truck tires.
I plan to argon fill my trailer tires to finish off my argon bottle when it gets low, not to reduce RR but to help fend off dry rot from oxygen permentation.
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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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