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Re: [ST] Tire Pressures
- Subject: Re: [ST] Tire Pressures
- From: Bil Swartz <bil@xxxxxxxxxx>
- Date: Wed, 21 Jun 2006 20:04:38 -0700 (PDT)
On Wed, 21 Jun 2006, Joel Ashman wrote:
> On an interestingly related side bar, I just learned an interesting method
> to set your tire pressure (on a car/truck). Drive the vehicle for 30-60
> minutes. Then use a infrared spot thermometer and measure the temperature
> across the width of the tire. If the outside edges are hotter than the
> inside of the tire, the pressure is too low. If the center of the tire is
> hotter than the outside edges, then the pressure is to high. If the center
> temperature and the edge temperatures are within 2 degrees (or so) then the
> pressure is just right.
Heya Joel,
Similarly on the bike, you ride for a bit and take a pressure reading. I
think we're looking for a pressure rise of about 3-4 psi (or around 10%?)
when the tires are warmed up IIRC. But then those other variables such as
tire wear and contact patch manipulation enter into what you want to do.
FWIW,
--
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