Help me understand this:

In the back of GRM, (the tire guy Q-A section) there was a statement that says "for every 10 degree rise in ambient temp, there will be a 1 lb increase in tire pressure"... (I hope I remembered the quote right)

So with that in mind and assuming a linear temp/pressure relationship, you would have to consider outside temperature before determining and setting cold tire pressures. No?

Or does it matter? Start with 32 lbs cold, regardless of the ambient temp and acheive the 40 lbs (or so) when the tires come up to temp...

TIA

Greg - who watched "A Beautiful Mind" last night and thinks it screwed him up...


[Modified by bulldog_RS20, 6:55 PM 8/6/2002]

 

You could run Tire-liefs and not worry about it anymore.

You should make up a chart of static tire temp vs pressure. Then at any time you can know your normalized pressure. Then you can start paying attention to the track surface temperature to really fine tune your starting pressures.

Scott, who doesn't run Tire-liefs......and doesn't do any of that other stuff either....I've already got too many charts and tables for right now....

 

Should we also consider elevation above see level in this equation?? Oxygen density decreases with higher elevation. I'm about 30ft above sea level but for those in Denver CO they are about 5k above sea level. And how about humidty levels too. Anyone in the AMS on this board???


[Modified by Civic242, 2:30 PM 8/6/2002]