I may have been wrong for years... I learned ( I think from the AA
(AAA) ) that before a long journey, to put a couple of extra pounds in
your tyres. When they warm up, they soften and need more air.

As for loading up your car, 'my' thoughts were, a given volume of air in
a given space, give a constant pressure. For it to go up 'much' when
you load the car, you would have to see a serious flat spot (less space)
on the bottom of the tyre.

I havent looked recently, but I thought the MAX pressure was like 135psi
or something way up there ?

Just my thoughts

Rich

Dan Smith wrote:
> "Joey Tribiani" > wrote in message
> news:f7Cde.1260$sy6.76@lakeread04...
>
>>"Dan Smith" > wrote in message
>>news:bIyde.42166$r53.25669@attbi_s21...
>>
>> > >
>>
>>>GEEEEZ!!! You're running at 35psi all the way around??? Are you
>>>suicidal???
>>>
>>>You're tires are probably rated at a maximum of 35psi. That's fine if
>>>you're just going to leave it parked in the garage or in the shade.
>>>
>>>You put yourself in the car and the pressure goes up. You drive for
>
> more
>
>>>than a couple of minutes and the pressure goes up more. You're probably
>>>driving around with close to 38psi in tires rated at 35psi.
>>>
>>>Where in the world did you get the idea that this was an OK thing to
>
> do???
>
>>>Why are you intentionally ignoring the safety ratings of your tires and
>>
>>the
>>
>>>car manufacturers recommendations???
>>>
>>
>>
>>dude calm down..its obvious you are no tire tech so maybe read your
>
> sidewall
>
>>sometime...the max psi is listed as a cold temp....this pressure is set
>
> with
>
>>a tollerance for an increase in pressure due to heat....it is not uncommon
>>to gain up to 5-6 psi in summer weather on the interstate, and the tire
>>manufacturers know it.....so don't have a stroke, your point is not only
>>wrong, but basically pointless....(BTW "put yourself in the car the
>
> pressure
>
>>goes up" is incorrect too...the max weight is also what the max pressure
>
> is
>
>>designed for...sheesh...)
>>
>>
>
>
> Oh, and the max pressure isn't listed as a cold temp, it's listed as a max
> pressure. Max means max.
>
> The normal car manufacturer's tire pressure recommendation is the cold
> inflation pressure you're thinking of.
>
> Yes, while driving it's not uncommon for the tire to gain pressure in the
> summer weather or in cold weather either. And that was my point. If
> someone is foolish enough to air up their tires to the maximum then they
> have no leeway for normal pressure increases due to load and friction.
>
> You also said, ""put yourself in the car the pressure
> goes up" is incorrect ".
>
> Who are you trying to BS? Of course the tire pressure goes up as the load
> increases. You're talking nonsense.
>
> Since you don't think tire pressure goes up as the load goes up you
> definitely don't know what you're talking about.
>
> If I air up my tires to the car manufacturer's recommended pressures and
> then I put 400 pounds of people in the car obviously the tire pressure goes
> up.
>
>