Tire pressure after driving?

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Old 31 Mar 2012, 11:28 am   #1 (permalink)
Bookish
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Default Tire pressure after driving?

When cold my tires should measure 30 psi according to the label on
the door. After driving for an hour what psi should they measure? Is
it possible to get a close to accurate reading?
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Old 02 Apr 2012, 07:55 pm   #2 (permalink)
hls
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Default Re: Tire pressure after driving?


"Bookish" <bye.plane@gmail.com> wrote in message
news:df616a6a-2ca0-4cb4-942c-e18c9db13362@f6g2000vbc.googlegroups.com...
> When cold my tires should measure 30 psi according to the label on
> the door. After driving for an hour what psi should they measure? Is
> it possible to get a close to accurate reading?


Sure.. After driving for an hour, use your tire gauge and measure the
pressure. Really!

You know darn well that the pressure will go up with temperature, and
that temperature will go up with driving. And then, when the tire cools,
the pressure will go right down again to the ambient temperature level.

Are you going to try to chase the temperatures and pressures up and down
constantly?? Get anal about something that really matters.

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Old 08 Apr 2012, 12:08 pm   #3 (permalink)
pj.chris@verizon.net
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Default Re: Tire pressure after driving?

On Sat, 31 Mar 2012 08:28:38 -0700 (PDT), Bookish
<bye.plane@gmail.com> wrote:

>When cold my tires should measure 30 psi according to the label on
>the door. After driving for an hour what psi should they measure? Is
>it possible to get a close to accurate reading?


Pressure after driving would involve knowing the temperature of the
road you were on, how fast your were going, how hard you were braking
and turning,the outside air temp, if the tire(s) were in balance and
aligned and how old they are and if you had extra weight on them for
the rears.. All of these factors influence heat build up to some
extent. But a gain of 2-6lbs is a likely normal gain for most tires.
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