Tire Pressure Question

And these pressure measurements are for warm tires right? I assume after driving a bit and not sitting cold overnight in the morning? Sorry for the absolute naive questions.

 

^^ No, these are always cold pressures, such as sitting overnight.

If adjusted to the label recommendation while the tires are warm from driving, then they are actually underinflated.

 

I got 83,000 from my 2007 OEM tires, front :42 rear: 40

 

wow.

 

+1.

 

From what I have heard over the years is that Nitrogen makes for a more constant air pressure, which is why it is used in aircraft and in auto racing. I don't know if that is a true statement, so I'm not looking for an argument. Lots of debate on other threads herein. As long as it doesn't cost extra, I use it. Costco or the local tire dealer will fill my portable tank at no charge, or my tires if I go by the shop.

 

What is the fundamental difference between using 100% nitrogen and 80% nitrogen (a.k.a "air")? Moisture? The oxygen in the mixture? Not looking for an argument, just curious.

 

Suppose to be less leakage and less rust formed. As I said, I have no proof. The guy who introduced me to it was involved in racing. Scientific types and engineers on both sides of the discussions here.

 

For a compromise of mileage vs. ride comfort, I set my tires at 38 front, 35 rear, and I blend, using a special pump device, roughly 4 parts of nitrogen for every 1 part of oxygen.