measuring tire pressure at the track
- Thread starter jonko
- Start date
ST Guy
Well-known member
I've heard that pressure can go up as much as 7 psi or more.
I've also heard that one time honored way of setting pressure is to set it cold and then measure the temperature rise after it gets hot.
And maybe another way to do it would be to have a temperature gun handy and take tire temp readings the instant you come in from the track. High temps - raise pressure a bit. Low temp - lower pressure a bit.
Oh, and ambient temp will definately have an effect on cold pressures. If you filled to 30 psi on a cold morning before riding. The next day in the middle of the afternoon when it's 90 degrees out, you'll find that your baseline pressure has gone up.
Elevation all plays a role. Fill your tires to 30 at sea level and ride up to Sonora pass and tire pressure will be higher.
Any experts out there?
I've also heard that one time honored way of setting pressure is to set it cold and then measure the temperature rise after it gets hot.
And maybe another way to do it would be to have a temperature gun handy and take tire temp readings the instant you come in from the track. High temps - raise pressure a bit. Low temp - lower pressure a bit.
Oh, and ambient temp will definately have an effect on cold pressures. If you filled to 30 psi on a cold morning before riding. The next day in the middle of the afternoon when it's 90 degrees out, you'll find that your baseline pressure has gone up.
Elevation all plays a role. Fill your tires to 30 at sea level and ride up to Sonora pass and tire pressure will be higher.
Any experts out there?
unless you absolutely know what you are doing, it is best to use only cold pressure. way to many varibles to consider when trying to get to a hot pressure. At least for street and track riders.
Now if you are a racer, are in constant contact with your tire guy, know exactly how tires work, and are using every ounce of grip, then hot pressures make sense. but for 95% of riders out there, you can not go wrong with a good recommended cold pressure
Brian
Now if you are a racer, are in constant contact with your tire guy, know exactly how tires work, and are using every ounce of grip, then hot pressures make sense. but for 95% of riders out there, you can not go wrong with a good recommended cold pressure
Brian
elskipador
elskipador@gmail.com
+1 on what brian said.
and ST guy a surface, infra-red temp gun isn't worth .02 cents when it comes to tire temps. you need a probe style. 1 that you can stick into the tire and get the actual carcuss temp. be careful with the probes though, because if you don't know what you're doing you can puncture the carcuss with the probe.
and ST guy a surface, infra-red temp gun isn't worth .02 cents when it comes to tire temps. you need a probe style. 1 that you can stick into the tire and get the actual carcuss temp. be careful with the probes though, because if you don't know what you're doing you can puncture the carcuss with the probe.
