Tire Inflation: Proper PSI to run?

[marc at getty.net (Marc Getty)]

Don't forget that increased speeds require higher tire pressure. The
gas cap door of my C230 says to put 28 psi in front and 32 in back
(the drive wheels), with a note that for speeds over 100 MPH increase
by 3 psi.

I run at 31 psi in front and 35 psi in back because of this. I'm also
very conscious of fuel economy, as anyone who does 33K+ a year would
be, so I prefer the higher pressures to get the better mileage.

-Marc

'87 Tornado Red 16v Bogged Scirocco @ 235K miles
http://getty.net/scirocco/ 
'02 Mercedes-Benz C230 Kompressor Sports Coupe -
http://getty.net/c230k/
    in Heliodongr?n (Citron Green) took European Delivery in May 2002,
    state-side delivery on July 19, 2002, currently at 32,200 miles



-----Original Message-----
From: scirocco-l-bounces@scirocco.org
[mailto:scirocco-l-bounces@scirocco.org] On Behalf Of
toFUNit@yahoo.com
Sent: Thursday, July 10, 2003 3:41 PM
To: scirocco-l@scirocco.org
Subject: Re: Tire Inflation: Proper PSI to run?


Well Had always put 32 on my tire, no matter what it says! Since I run
it only during summertime, stays at 32, but if you run it during
wintertime, I suggest to lower it to 30 to increase the traction...

If you inflate too much, the wear of the tire will be affect and the
smooth of the drive too, but depends what you aim to get! Fuel millage
will we affect also if you don't inflate enough.

JOel

--- Mike Smith <smithma7@yahoo.com> wrote:
> Well, the guys at the gas station I used to work at always said to
go 
> by what the car says, not the tire.  But, considering the amount of 
> drinking (and
> whatnot) these guys did along with the quality of their work
(sometimes
> lacking), I want a second (or in the case of this list, third,
fourth, etc.)
> opinion!
>  
> Mike
> 
> "Tyler P." <ty@festf.org> wrote:
> Ok, how do I know what PSI to run on a car? Should I go by what the 
> max psi rating is on the sidewall of the tire? Somebody on vortex
said 
> to always go by what the car manual says but this doesn't make sense

> if I'm running after market wheels and tires. Once, at discount tire

> the guy told me that the kuhmo 712's on my scirocco had a lower load

> capacity than stock so they should be running a higher psi, also the

> goodyears gsd3's on my bmw says they have a max psi of 51. I've
always 
> just run around 32psi but should I be doing something different to 
> determine the proper psi?
> 
> 
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