Tire Pressure? Cooler Weather is Here

[AlabamaNomadRider]

Be sure and check the tire pressure. With cooler weather the tire pressure WILL GO DOWN. My rear was 5 pounds down and the front was down 3 pounds. :tup:

[recumbentbob]

Good advice, I check my tire pressure every Saturday.

[krash]

Ok, I'll buy some! How much is it?
Are you selling it by the pound?
Can you ship AIR mail?

Sorry couldn't help myself.......:D :D :D

[Top Cat]

This may be a dumb question but if my cold tire pressure is down 5 lbs and I add 5 lbs to the tire,then go ride and the tires warm from riding, aren't I running 5 lbs to much pressure at that point?:shrug:

[Jared]

This may be a dumb question but if my cold tire pressure is down 5 lbs and I add 5 lbs to the tire,then go ride and the tires warm from riding, aren't I running 5 lbs to much pressure at that point?:shrug:

Yes. As you ride and your tire warms up, you psi will increase. For that reason, you are suppose to measure the psi before you go out to ride. Try it sometime. Measure it on a cold morning and then go ride for 100 miles and measure it again. You'll notice a small (probably around 2 psi) difference.

[Dave]

It's not cold out here.

[AlabamaNomadRider]

When you check cold tire pressure it should be at the recommended tire pressure whether the weather is cool or hot. My rear was down to 36 pounds instead of having 41. By riding a hundred miles it might have gone up to 41 but that is hot tire pressure. When the tire cools back down you will be at 36. Does that answer your question TC?

[ringadingh]

I keep the same tire pressure regardless of how cool it gets outside, winter or summer.

[AlabamaNomadRider]

That is the correct way Steve. You always want the tire pressure to be at recommended pressure the first time you check it while tires are cool. I keep 41 at all times. Whether the temp is hot or cool when you ride the tire pressure will rise a couple of pounds or so. You just always want the tire pressure to be at recommended pressure before you start the ride.

[Jared]

This comes from tiretrack.com

"The rule of thumb is for every 10° Fahrenheit change in air temperature, your tire's inflation pressure will change by about 1 psi (up with higher temperatures and down with lower).

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=73

[doctorgski]

You have to watch elevation too. As you go up in elevation, like from Denver at 5280 ft to Breckenridge at 9640 ft, the pressure will go up in the tire. So if you start out in Denver with 41 psi, stopped in Breckenridge and let the tire cool, then checked it cool, the tire would likely be about 43 psi. It's really bad when we go to Breckenridge from Florida. If I have 41 psi in Florida (sea level) and check it in Breck, they will be about 45 psi. It's the same in our Bus and I do keep a close eye on it as I run the max 120 psi in the fronts.