You'll note I debunked the larger molecule sales point. Pointed out water vapor as well. As for condensation cycling you fix that with a water separator and a desiccant drying chamber on your air system.

When I bough my 03 FXD last fall it still had the OEM tires on it, I know a guy with a 97 fatboy who rides so little he still has his OEM tires and refuses to change them because he has plenty of tread left.



People think they don't have to check tire pressures because it's got nitrogen in it, Charles law still applies to dry gasses, 1 to 2 psi loss for every 10 degrees in temperature drop, which can be significant since very few people actually check pressures and air tires up when they are cold. A tire is not an impermeable gas barrier either you will lose pressure over time, if you have old tires odds are you have never replaced the valve stem either which can and often does become a point where pressure can be lost.

 

I saw you pointed out the 2.6% difference. I wasn't sure if you were debunking the claim as marketing hype.


I do this, but it's not fool proof. With oxygen and hydrogen in the same space, they will eventually find each other.


I know someone with a 06 Fatboy in the same situation. I remind him every time I see him.


I check pressure occasionally and always before a long ride. I always check cold and make adjustments before leaving the garage. When I check, I almost always add air to one or both tires.


A lot of people just don't check, as expressed in this thread. I'm not sure their schedule (or lack of) would be any different because they use a different gas mixture in the tires.


I understand the pressure drop due to lowering temperatures, but I worry more about the gradual loss that occurs even when temps are pretty steady.


Out of curiosity, if you add air in the winter because the temperature dropped by 40 degrees from when you last put air in, do you let some back out when the temperature rises?

 

I ride almost all year round and typically adjust my tires once every 2 weeks.

As far as oxygen and hydrogen finding each other I go through tires at a pretty steady pace, and even in instances where a tire might be on for a couple of years I don't get excited about it. I've pulled tires off that I've been adjusting over a couple of years time and they've been dry as a bone. Now that I run ride-on in the wheels I couldn't tell you if I am getting any condensation or not.

 

Once a month minimum. When you ride regularly and fast, the last thing you want is improperly inflated tires. You only got 2 small contact patches on the ground as it is!

 

Oh brother!
Get a new "shop."
Riders should do a complete tire inspection everytime they ride. Everytime.

 

Never had a bike tire that lost much air in the tires. I check them about once a month or so...Normally right where they should be. But I give them a nice kick about once a week.

 

I have the Steelmate TPSM on all three bikes, tire pressure check anytime at a glance while riding, have to press a button for temperature though.
I don't use nitrogen in my bike tires, I actually want the pressure gain, and seldom need to add air.

Most people have no idea how much pressure they run in their tires.
Seeing tire pressures only is not the whole story, temperature and pressure tells you whats going on.

I set cold pressures at 42 rear, and 36 front, which is usually 70-80 degrees in summer mornings when outside temps average 90-100 mid day.

Tires usually run 50 rear at 115 degrees, and the front 40 at 92 degrees when up to running temps.(two up bagger)

On a NW trip this past spring, morning temps in the 40's showed tire pressures in the low 30's, 10 miles down the road and the tires reach normal running temps and pressures.

 

Was checking every few weeks up until early this year. Missed a significant air loss on rear due to a failing valve core (solution suggested by some members of this forum). Still don't know how low it got while riding on it, but it was down to 8 (yeah, not a typo) when I finally checked it.

Now they get checked religiously before every ride, and logged, along with air temp.

I'm comfortable with 38-40 rear and 36-38 front. American Elites.

 

I check tire pressure once a week. Just part of riding, for me.

 

I've actually checked mine once this yr. with a gauge. Otherwise I just rely on my TPS system to keep it in check