tgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 3 days agotire prulessurelemmy.blahaj.zoneimagemessage-square38linkfedilinkarrow-up1570arrow-down11
arrow-up1569arrow-down1imagetire prulessurelemmy.blahaj.zonetgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 3 days agomessage-square38linkfedilink
minus-squareironhydroxide@sh.itjust.workslinkfedilinkEnglisharrow-up6·2 days agoThat’s the opposite of how that works. Tires are a gauge pressure, meaning pressure vs ambient pressure. 14.7 psia (absolute) at sea level. And getting less as you go higher elevation. 12.7psia ambient is ~4000ft elevation 10.7psia ambient is ~8500ft elevation So if it you start at sea level with 40psig in your tires, when you get to 8500ft elevation and measure the tires you’ll be ~44psig. If you start at 8500ft at 40psig, when you get to sea level they’ll be ~36psig.
minus-squareEntertainmeonly@lemmy.blahaj.zonelinkfedilinkEnglisharrow-up2·2 days agoHaha totally. You are correct. Like Wonka says, “Switch that. Reverse it.”
That’s the opposite of how that works.
Tires are a gauge pressure, meaning pressure vs ambient pressure.
14.7 psia (absolute) at sea level. And getting less as you go higher elevation.
12.7psia ambient is ~4000ft elevation 10.7psia ambient is ~8500ft elevation
So if it you start at sea level with 40psig in your tires, when you get to 8500ft elevation and measure the tires you’ll be ~44psig.
If you start at 8500ft at 40psig, when you get to sea level they’ll be ~36psig.
Haha totally. You are correct.
Like Wonka says, “Switch that. Reverse it.”