Tex Bigfoot Posted February 15, 2015 Report Share Posted February 15, 2015 The thread regarding sleep number mattress and the need to lower the air when crossing a pass got me to thinking . Has anyone ever had a problem with tires over pressurizing when at altitude? Years ago we would have never even known that the pressure had risen but now with the TMPS that are widely used you would at least know that PSI was higher than normal. Link to comment Share on other sites More sharing options...
Nolan Posted February 15, 2015 Report Share Posted February 15, 2015 Have forgotten to lower the pressure on the sleep number mattress and never had it blow. No problems with tires on high elevation either. I do check the tire pressure every morning we are moving and change it then if needed. Link to comment Share on other sites More sharing options...
trailertraveler Posted February 15, 2015 Report Share Posted February 15, 2015 I have noticed that the tire pressure will go up some at higher altitude, but it has never gotten near as high as it will driving at highway speeds when the air temps are above 90F. So I have never adjusted it, I guess if I was spending all my time at a high altitude, I would consider adjusting the pressure, but not for just going up and over. Here is a discussion about the effect of altitude on tire pressure. Link to comment Share on other sites More sharing options...
bigjim Posted February 15, 2015 Report Share Posted February 15, 2015 I know altitude and possible temprature change to a lesser extent has caused some items in the kitchen to leak or siphon out if it is in one of the plastic container that nowadays most come in. Like mustard, ketchup, or the latest was some cooking oil in the cabinett. Link to comment Share on other sites More sharing options...
Chalkie Posted February 15, 2015 Report Share Posted February 15, 2015 Take a bag of potato chips from low elevation to high and see what it does. Too high and .... POP! However, I never had an issue with tire pressure. Living at ~7000' I have never really had to adjust either going lower (Texas) or higher (off roading at 13000'+). As long as tires are regularly checked and are inflated properly to cold inflation recommendations you should not have any issues. Tires are designed to accommodate a range of pressures while operating (both elevation and heat). Link to comment Share on other sites More sharing options...
Tex Bigfoot Posted February 15, 2015 Author Report Share Posted February 15, 2015 Not that I really expected any problems it was just one of them things that make you say. Hum Link to comment Share on other sites More sharing options...
rockintom Posted February 15, 2015 Report Share Posted February 15, 2015 One must also consider the size or volume of air something has. Something like a mattress has a lot of air and not really a big issue UNLESS you already have it maxed out a lower altitude. A bike tire has a lot less volume and the pressure raises a lot when going up!!!! Ask me how I know!!!! Just sayin' '12 Excel Limitied 33ft GKE Full Timing '14 Chev 3500 CC DRW D/A named Bullet Link to comment Share on other sites More sharing options...
bigjim Posted February 16, 2015 Report Share Posted February 16, 2015 How do you know? Just being cooperative. Link to comment Share on other sites More sharing options...
Tex Bigfoot Posted February 16, 2015 Author Report Share Posted February 16, 2015 One must also consider the size or volume of air something has. Something like a mattress has a lot of air and not really a big issue UNLESS you already have it maxed out a lower altitude. A bike tire has a lot less volume and the pressure raises a lot when going up!!!! Ask me how I know!!!! Just sayin' While I was thinking of trailer or truck tires. You bring up a point that I most likely do need to keep in mind as I tend to run my bike tires at or near max. Thank you for that Link to comment Share on other sites More sharing options...
rockintom Posted February 16, 2015 Report Share Posted February 16, 2015 Yep.......I maxed out all the tires, truck, trailer, spares, and the bikes. Went from sealevel to over 7K ft........boy was that costly!!! Tires and tubes on the bikes. The tires were older and they broke out the cords near the bead of the tire. That's enough talk of my stupidity for today!!!! '12 Excel Limitied 33ft GKE Full Timing '14 Chev 3500 CC DRW D/A named Bullet Link to comment Share on other sites More sharing options...
skp51443 Posted February 16, 2015 Report Share Posted February 16, 2015 Too lazy to google up air pressure change with altitude but you have about 14.7 PSI at sea level and around 10 psi at 10,000 feet. Not going to make much difference in a high pressure tire but in a low pressure device or tire it can be a problem. First rule of computer consulting: Sell a customer a Linux computer and you'll eat for a day. Sell a customer a Windows computer and you'll eat for a lifetime. Link to comment Share on other sites More sharing options...
Kirk W Posted February 16, 2015 Report Share Posted February 16, 2015 If you are really concerned about it, check it out on the engineering toolbox website. Stanley is right on and the change is not enough to amount to anything significant for tires on an RV. It might effect tires on a swamp buggy or something and could make a significant change in your mattress, but not enough to be likely to harm it. Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
Tex Bigfoot Posted February 16, 2015 Author Report Share Posted February 16, 2015 Kirk that is a great website. Having crossed the Rocky's many times on a truck I knew that truck and trailer tires are ok the bike tires is something I will keep in mind . My main concern was that with a TPMS I would notice for the first time the different in PSI and do something dumb ...like air down. I was also wondering if while at altitude for a month or so I should air down some. Link to comment Share on other sites More sharing options...
Ray,IN Posted February 16, 2015 Report Share Posted February 16, 2015 Take a bag of potato chips from low elevation to high and see what it does. Too high and .... POP! However, I never had an issue with tire pressure. Living at ~7000' I have never really had to adjust either going lower (Texas) or higher (off roading at 13000'+). As long as tires are regularly checked and are inflated properly to cold inflation recommendations you should not have any issues. Tires are designed to accommodate a range of pressures while operating (both elevation and heat). Hah, we did that in 1998 (I think). Left IN, drove I70 W, through the tunnel, stopped near the summit. Opened 5er to find the interior littered with potato-chip.s Anyway, air pressure change with altitude and temperature. shows the change is insignificant unless we are running the minimum tire pressure (per load/inflation charts) now, or plan on reaching 20,000' or higher. 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
folivier Posted February 16, 2015 Report Share Posted February 16, 2015 I had a container of rocky road ice cream, the kind with marshmallows, blow the lid off and rise up about an inch once. Bought it in Louisiana and found it in Creede. Back on the road again in a 2011 Roadtrek 210P 2011 Tahoe 4x4, 2006 Lexus GX470, 2018 Ranger XP1000, 2013 RZR 570LEhttp://finallynewellin.blogspot.com/ Link to comment Share on other sites More sharing options...
Tex Bigfoot Posted February 16, 2015 Author Report Share Posted February 16, 2015 I had a container of rocky road ice cream, the kind with marshmallows, blow the lid off and rise up about an inch once. Bought it in Louisiana and found it in Creede. of course at that point the best way of handling the overflow involved a spoon and a smile. Right? Link to comment Share on other sites More sharing options...
skp51443 Posted February 16, 2015 Report Share Posted February 16, 2015 The fancy new condiment containers that open from the bottom can also be a real surprise. A bit of altitude and you get splattered when you open them, a lot of altitude and they can open themselves and redecorate the fridge. We put turning all of them spout up on our pre-trip checklist. First rule of computer consulting: Sell a customer a Linux computer and you'll eat for a day. Sell a customer a Windows computer and you'll eat for a lifetime. Link to comment Share on other sites More sharing options...
Ray,IN Posted February 17, 2015 Report Share Posted February 17, 2015 The fancy new condiment containers that open from the bottom can also be a real surprise. A bit of altitude and you get splattered when you open them, a lot of altitude and they can open themselves and redecorate the fridge. We put turning all of them spout up on our pre-trip checklist. Been there, done that_ Didn't even have to climb a mountain, just sat it on the counter from the frig., opened it about an hour later and SPLAT! 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
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