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post #21 of 33 (permalink) Old 07-30-2008, 04:50 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

I followed Toyota's recommendations when the car was new, and my original Integrity tires wore out in abotu 20K miles. THe center had plenty of tread left, but the edges were worn bare.

I replaced the tires with ComforTreds and use pressures of about 40F/38R. My tires have gone 50K miles and have tread left, and have worn more evenly. They do not ride hard at this pressure because of the cushioning layer in this model tire. I am sure they would be softer still at lower pressures, but they feel as smooth as the Integrities did at stock pressures.

I didn't do it for gas mileage, but it undoubtedly helped in that area also. But it was mainly to get decent tire life and wear. I do mixed freeway/suburban stop'n'go, sometimes in the wet but never in the snow.

2005 Seaside Pearl, BC#6
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post #22 of 33 (permalink) Old 08-03-2008, 10:09 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

So to save money at the pump we inflate our tires and spend that money we saved at the pump buying new tires sooner? (LOL)
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post #23 of 33 (permalink) Old 08-03-2008, 10:13 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

Quote:
Originally Posted by Kingetula
So to save money at the pump we inflate our tires and spend that money we saved at the pump buying new tires sooner? (LOL)

Aaaayyuuuuppp!

Better to send my money to Yokohama in Japan than to OPEC

2005 silver #6/BC
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post #24 of 33 (permalink) Old 08-03-2008, 10:24 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

Quote:
Originally Posted by wstander
Quote:
Originally Posted by Kingetula
So to save money at the pump we inflate our tires and spend that money we saved at the pump buying new tires sooner? (LOL)

Aaaayyuuuuppp!

Better to send my money to Yokohama in Japan than to OPEC
Except that with the Integrities over inflating improves the life of the tire, not decreases it. At 50/48 mine are about at the end of their life and are still most worn on the outside edges.

PA P

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post #25 of 33 (permalink) Old 08-04-2008, 05:11 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

Quote:
Originally Posted by PA Prius
Quote:
Originally Posted by wstander
Quote:
Originally Posted by Kingetula
So to save money at the pump we inflate our tires and spend that money we saved at the pump buying new tires sooner? (LOL)

Aaaayyuuuuppp!

Better to send my money to Yokohama in Japan than to OPEC
Except that with the Integrities over inflating improves the life of the tire, not decreases it. At 50/48 mine are about at the end of their life and are still most worn on the outside edges.

PA P
PA,

The GY integrities, max cold pressure is 45 psi ? Isn't it? 50 psi in your tire is "Over inflated" I think. I will go with the general concensus of _a little under_ as prescribed in the tire wall.
F42 psi/ R40 psi is very much in line, and I like the overall driving feel.

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post #26 of 33 (permalink) Old 08-04-2008, 08:36 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

Right, they are over inflated according to the sidewall max. I am not concerned since we drive very conservatively and even more so on wet roads, we do not drive about 1000' elevation, and bursting strength is four to five times that of the sidewall max.

PA P

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2004 Lifetime mpg: 52.3 actual / 53.3 MFD 60.7cs
ScanGuage II Sharkfin Amsoil 0/30 56/54
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post #27 of 33 (permalink) Old 08-07-2008, 06:44 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

I'm wondering if there is anybody else from Arizona (Scottsdale) where our summer temps exceed 100 consistently. Is there any risk in inflating tires to the 42/40 or even higher psi during our intensly hot summers? I don't want to be blown to the moon!!!
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post #28 of 33 (permalink) Old 08-07-2008, 06:56 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

I live over the hill in Ramona, CA where we regularly scratch 100-110 in late summer, and 90-99 currently. I have run 42/40 on my 2005 for years with no problems.

I used to race at Firebird, when track temps hit 150 and the ambient was 110 at 10PM. We all ran 42 front and 44 rear on street tires without failure...some even went as high as 50 on the outside tires....

Other than a little firmer, and noisier ride, no issues

2005 silver #6/BC
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post #29 of 33 (permalink) Old 08-08-2008, 11:21 PM
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Default Re: Tire Pressure 42PSI front 40PSI Back - Why?

Quote:
Originally Posted by C.Rickey Hirose
The GY integrities, max cold pressure is 45 psi ? Isn't it? 50 psi in your tire is "Over inflated" I think. I will go with the general concensus of _a little under_ as prescribed in the tire wall.
F42 psi/ R40 psi is very much in line, and I like the overall driving feel.
This is not "a little under" but "a lot over". The sidewall figure is the MAX and is independent of what car the tire is installed on. Yes, you are under the sidewall max, but this is a MAX, not a "prescribed" value.

I agree with the "higher then owner's manual recommended" pressure, and I would NEVER inflate them over the MAX on the sidewall.

2005 Seaside Pearl, BC#6
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post #30 of 33 (permalink) Old 07-27-2014, 11:26 PM
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I hope that everything is ok with your tires.
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