Quote:
Originally Posted by RidingOnRailz
I haven't noticed much of those, and my steering on this car is still quite direct, especially with higher pressures than specified by Honda.
I just found this, Capri:
https://www.rimex.com/images/TyreSen...n-pressure.pdf
What does it mean?
If I set my tire pressures to 32psi on a given morning, is their actual pressure lower than what's indicated on the gauge?
By the reasoning and examples in this article, I should, depending on morning ambient temperature, be setting my tires to between 34-36psi(via gauge) to get true 32psi.
What?! |
First, Rimex is selling a device, but they have taking some liberties with the truth to convince people to buy that device.
The first concerns "Cold Pressure". They define it differently than all the tire manufacturers define it. "Cold pressure" is the pressure in a tire when the tire hasn't been operated for some time - that is "cold".
The fact that if you set the cold pressures when the ambient temperature is - say - 50° F, then later measure the pressure when the ambient temperature is 90° F, you get a different pressure reading - is just an unfortunate fact of Physics. Rimex is trying claim that their device works off a different law of Physics - that the proper pressure in a tire is defined as occurring at a particular set of temperature and atmospherically pressure conditions - which oddly enough are different that STP (Standard Temperature and Pressure) as defined in Chemistry.
That is incorrect - and I suspect they are deliberately doing this incorrectly because their device would require more complication to do correctly.
So while there is a lot of correct physics in the article, their starting premise is incorrect.