I maintain my position but lack the degree or linguistics to explain to my or your satisfaction but I'll still try...actually, I mostly maintain my position but agree with your result though not for the wording you gave. or something, how bout I try to explain my thought process and see what others think. (grrrr... when can we get telepathy and leave the silly limitations of language to pass on ideas behind)
upon reflection I agree that tires will be underinflated more often, but by a percent. I'll try to make up for my lack of quantitative accuracy with qualitative reasoning for I went for a real-world/hands-on degree in school, not physics, engineering, look at how water spirals 12 year program (no offense).
<p>at sea level (at given temp etc) it takes X mass of air to create 35 psi in the tires. at altitude it takes less than X mass (lets say 30% of X at 10k feet using your numbers above) thus, losing Y amount of air from your tires at 10k feet will drop significantly more PSI than at sea level. Basically the curve for mass of air in the tire vs PSI will be compressed at altitude<p>
<p>HOWEVER What holds the car up though is the relative pressure which is 35 psi higher than whatever atmospheric is whether it's
5 psi atmo or 50 psi atmo (hate to live on that planet...how many Gs I wonder?) concurrently the force on the tire is caused by the relative pressure SO if you have a leak in the tire it'll take the same amount of time to deflate to atmo pressure. since, as you say, the SUV weighs the same at 10k ft as 0 ft, the force is the same, the pressure difference is the same, and unless you're inflating your tires with an air mass meter, you're fine.</p>
I dunno if I made any sense but I entertained myself for 5 minutes
).
). But you're totally right, my mistake 
I was totally stuck on abs pressure and missed a critical point 
Linear Mode
