PSI Change
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Road Master
Joined: Sep 2013
Posts: 1,185
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From: Sterling IL.
PSI Change
Guessing this is normal but I would never have guessed the change in pressure so high. Just added TPMS to my tires and my cold pressures are set as 39 front and 41 rear. My front goes to 42 but rear was 48 last night. I like knowing if there is a problem but I think I may have to adjust my upper alert level from 50. This was an hour long 75 degree day ride.
Seasoned HDF Member
Joined: Aug 2008
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amen mr. mutli!!
i hate to be even forced to deal with it. all the newer mandates from big brother are the problem. big brother thinks we can not walk and chew gum at the same time, hummmmm, then again some can't so to protect the stupid, it is forced on all. in the 60s, a 1.5hp lawn mower would cut just about anything, today, the average mower is 5hp and about 20# of safety equip added. why??? to protect the stupid, damn if i would ever back a mower over my foot, much less to know what gear i am in!!!
well to back up a little, i did own a ww2 era two cycle sachs that could run in reverse direction when the points got keltered, now that was weird for sure!!!
i hate to be even forced to deal with it. all the newer mandates from big brother are the problem. big brother thinks we can not walk and chew gum at the same time, hummmmm, then again some can't so to protect the stupid, it is forced on all. in the 60s, a 1.5hp lawn mower would cut just about anything, today, the average mower is 5hp and about 20# of safety equip added. why??? to protect the stupid, damn if i would ever back a mower over my foot, much less to know what gear i am in!!!
well to back up a little, i did own a ww2 era two cycle sachs that could run in reverse direction when the points got keltered, now that was weird for sure!!!
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Road Master
Joined: Sep 2013
Posts: 1,185
Likes: 248
From: Sterling IL.
Cool, thanks! My wheels suck big time for access to check air pressure which is reason for monitor. For me I prefer to know normal patterns, more info the better! The more you know....
Stellar HDF Member
Joined: Jun 2017
Posts: 2,314
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From: Oklahoma
I have had a TPMS system (it has tire temperatures also) on my bike for a year now and that is about the range of increase I see as well, sometimes a little more even. If your system has the tire temperatures also, give that a look. The rough number for tire pressure increasing due to heat build up is 1 pound psi for each 10*F that the tire warms up (roughly). So if you start out at 40psi at 70 degrees, then ride for a bit and the tire warms up to 100 degrees you'll notice your tire pressure is up to about 43psi. When you park and the tire cools it will be back at 40psi. My back tire always runs warmer and higher psi than the front, even if they both start off at 40psi cold.
Last edited by Ssitruc; May 18, 2018 at 09:20 AM.
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Road Master
Joined: Sep 2013
Posts: 1,185
Likes: 248
From: Sterling IL.
Good information, thank you! Yes mine has the temperature monitor as well so I can see separate information for each tire (psi and temp) and set alerts for psi (both tires same alert criteria) min/max and temperature max prior to alerting.
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