Quote:
Originally Posted by markdoane
Gene,
It proves that your pressure gauge has excellent precision. Tire pressure should change 4 psi for a 27 deg. F change in temperature.
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A very interesting point.
No manufacture includes a temperature/pressure compinsation factor on their inflation chart but rather just suggests inflating tires while at abient. That's OK when I leave NJ in January headed for Fl. but not so good for anyone leaving Fl in Jan. and headed for NJ, not that anyone would do that.
I have long and often suggested to that individuals refer to the manufactures inflation charts when selecting a tire pressure. Now it is becoming increasingly clear that that advice may not be an all inclusive idea.
For the last 100,000 miles plus I have always set my tire pressure by an inflation chart. When I bought my 2004 Ford Excursion, a month ago, I used the same logic. This appears to have been a major mistake. Having almost lost the trailer due to sway I posted on this and other Ford Excursion sites for comments. 85% came back that one should not use the charts when dealing with an Excursion but rather increase the pressure almost to max.
If this is in fact the case with the Excursion how many other situations fall outside the manufactures recomendations? To date I have not tested this idea of higher inflation pressure because it flys in the face of all historical engineering recomendations. But it is causing me to think and look for strong supporting evidence on either side.