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I asked it a porsche dealer here. But there is also a standard or comfort choice. Comfort then is for lower speed , I think 160 kmph/99 mph. Porsche for other models give between brackets () the recomended pressure for the setting calculated from 20 degrC/ 68 degrF to temperature of gascompound...

Absolute pressure is the gauge-pressure plus ambiënt pressure, or do you have other idea about it. The sensors in tyre send digitalised the pressure in one pressure-kind, in steps of 0.5 psi or 0.05 bar. Temperature also in one kind ( C or F) and in steps of 1 , read once beginning at - 40 degr...

Main goal of tyrepressure -determination is to give the tyre a deflection that wont overheat any part of tyre-material when driving the speed constantly, for wich it is determined. Deflection is made by the load on tyre ,and pressure in tyre. On the plate the normal use ( 2 puppets) , the...

Need from tires next to yudge the pressures. 1. Maximum load or loadindex 2. Kind of tire to determine the referencepressure. 2 choices here, Standard load AT 36 psi, and XL/reinforced/extraload AT 42 psi. 3, Speedcode, less important. Shal be Q or above fir wich maxload is given for upto...

Even if you have that almost 100% Nitrogen in tire, you can fill up with normal air. And normal air is better, because of the water as humidity in it. Pressure rises higher when heated up by driving, but temperature of gascompound in tire stays lower. The extra pressure by water, gives lesser...

Registered to this forum to answer here. Call myself " pigheaded Dutch selfdeclared tyrepressure-specialist " , story began end 2007, when I got hold of the officiall european formula to calculate pressure for load and speed , and went running with it. Have no Porche , only old cheap car, so...