Hi Scotty, I have 2013 Honda Civic lately every month on the front tires I loose to put 2 to 3 lbs pressure each tire, the tpms light comes on. Any idea thanks. And I haven't seen your cat in any of your videos. did you take with you to Tennessee?
@pippodv59
What cat?
Keep in mind as temperatures drop more and more so will the pressure in your tires.
@okcafe
PV = nRT , … The ideal gas Law
At constant temperature and volume the pressure of a gas (air!) is directly proportional to the number of moles of gas.
So, you can formulate all the different gas laws:
P1V1 = P2V2
P1/T1 = P2/T2
V1/T1 = V2/T2
and so on...
F.S.
Sounds like you may have slow leaks or possibly small punctures. What PSI do you fill them to? Usually you need to be down 5-10psi before TPMS triggers a light, so maybe they are underinflated.
It seems to be a quite a small, tolerable leak. What I would do is simply purchase a tire pressure gauge. Throw it into glovebox, … and remember to check tire pressure weekly - initially, to determine how big of a leak it is. If indeed it is just just a one PSI drop, … I would simply check my pressure, say, every 2 weeks and pump it up as needed, …
… of course, I would also check all tires through and trough for cuts, punctured and stuck nails or screws in them - now - to be sure that it’s not that that causes your problem. Stuck screw or nail in a thread is quite effective plug! Puncture with a nail in it leaks slowly but surely just about every time!
… I would also quit relying on TPMS warning me about the condition of my tires, … because if TPMS kicks in, it’s time to take that tire off, and take into tire shop for thorough inspection. It just may be the tire is already a burnt toast, …
F.S.
There's no such thing as a "tolerable leak". If any tire leaks from any form of puncture, FIX IT !
Did I say a “tolerable leak from a puncture”? If I did, I’m so, so terribly sorry, … forgive me, please!
Anyway, … if there is a very slow leak, yet, … yet tire/rim/valve combination inspection shows no sign of punctures, cuts, sidewall rubs, rim bends or cracks, … and no soapy water bubbles whatsoever, … and still leaks air pressure at the rate of, say, … a PSI or less per month, … would you still insist on a fix?
Best,
F.S.
I do recall that I already said, “I’m so, so terribly sorry, … forgive me, please!” You’re not obliged to do so, of course. I fully understand, …
Anyway, … I’m just a shade-tree-mechanic with no bones to pick. Period.
Bestest regards
F.S.