78% Nitrogen is free. Highly recommended.

 

But if we bump it from 78% to almost 98% would that help with the fluctuation of pressure due to the temperature ?

 

Maybe for a motorcycle tire, but not automotive.

For a car or truck in the upper midwest, we have to adjust pressure 3 to 4 times every spring and fall. Pure nitrogen only cuts that to 2 to 3 times. Is having to adjust pressure a couple less times worth the inconvenience and price of pure nitrogen? Not for me. I have a home compressor, too.

 

Holy cow, man! You guys really do that?

 

Um, yeah - we have to. Here in the Siberia of the Americas (why do we live here, again?), Temperature varies from -30F to +100F. Nice place, eh?

Tire pressure varies app. 3 psi for every 20 degree change in temperature. The math is easy.

While I thoroughly enjoy motorcycling again, I'm not a die hard enthusiast that goes riding in my arctic parka @ 30 degrees like a lot of guys do here. They don't have a lot of other hobbies. I knew some of them at work.

 

I was thinking about this on my way home. AS I was riding, in 82*F temps, freeway, about 25 miles, My pressure went up from 37 to 44 PSI. I got to wondering, since the first tire never had such a spread, could it be possible that when the wheel was installed with the new tire, that maybe the wheel is misaligned a slight bit, and the slight sideways of the tire is actually "skidding" ever so slightly, but enough to make the tire hotter?

 

Yeah, math is easy, and somehow I have both survived, and had great tire wear.

Well, I lived in Alaska for over 15 years, and have similar climate in the Inland NW. My whole life in the north. We just never wrung our hands over tire pressure this much. I was just surprised.

 

I’ve only got a few hundred miles on my AE2’s. I’ve had the same experience. My original stock tires would slowly increase from 40 and 36 to 44 and 40, and (rarely) 1 or 2 more on a long ride in really hot weather. My new AE2s hit 46/42 after 20 or 25 miles in cool weather. And yes, the ride is noticeably worse when they warm up. They feel great when I first take off!

 

Now I know its not just me....

Rode to work last Friday. Temp was a high of 83*F. The rear tire started out at 37, which triggered the TPMS warning. Front was 36. My work is 25 miles from my house. Morning temp was 67*F Pressure was 40 when I got to work. When I left work, at 83*F, by the time I got home, pressure was 45PSI. I know air expands, but this to me, is very unusual. The tire gets hard and feels like it's going to pop.

 

LOL