Tire Inflation: Proper PSI to run?

[rocco16v at netzero.net (L F)]

One of my cars has a sticker on the door jamb that cautions;
"...add 5 psi to each tire (cold) when running at speeds in excess of 150mph."
So I do.

Larry
  ----- Original Message ----- 
  From: Marc Getty 
  To: 'toFUNit@yahoo.com' ; scirocco-l@scirocco.org 
  Sent: Thursday, July 10, 2003 12:56 PM
  Subject: RE: Tire Inflation: Proper PSI to run?



  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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