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Old 12-03-2004, 07:24 PM   #1
NewShockerGuy
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Arrow New tires, which tire pressure to go by, tire or car?

Just got Pzero's and wonder which tire pressure to go by? The one that is listed on tirerack for the Pirelli tires or do I use what the inside of the driver's door states for recommended tire presssure. Any pros or cons to using either or? I just don't want a blown tire and end up getting killed.

Thanks a bunch :-)

-Nigel
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Old 12-03-2004, 07:44 PM   #2
Skeete
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i have mine at ~40psi upfront and ~36psi in the rear and it's riding well for me.
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Old 12-03-2004, 08:14 PM   #3
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Always check the side of the tire for the max pressure of the tire, and stay under that. I'm running no more than 40 on my stock sized Continentals.
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Old 12-03-2004, 09:58 PM   #4
NewShockerGuy
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Quote:
Originally Posted by Skeete
i have mine at ~40psi upfront and ~36psi in the rear and it's riding well for me.

Is there a reason to have more psi in the front than the rear... I always thought they had to be uniform for all four?

I'm gonna check now on the tire and see what max PSI is.

Thanks,
-Nigel
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Old 12-03-2004, 10:13 PM   #5
RankFrank
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Quote:
Originally Posted by NewShockerGuy
Is there a reason to have more psi in the front than the rear... I always thought they had to be uniform for all four?

I'm gonna check now on the tire and see what max PSI is.

Thanks,
-Nigel
My understanding is that they should approximate weight balance. My MR2 is 28 in the front and 32 in back. Of course, it's also 2/3rds the weight of your car.
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Old 12-03-2004, 10:45 PM   #6
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Weight distribution is the reason, you're right RankFrank. About 4lbs higher in front seems to be the average 'round these parts. Helps kill the understeer, more grip for the fronts.
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Old 12-04-2004, 01:05 PM   #7
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^^^^ what Groceries said
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Old 12-04-2004, 02:33 PM   #8
Charlie-III
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1-the pressures listed on your car only work for the OEM tires or a similar one.
2-I use the rule of ~80% of max inflation as listed on the tire for normal use. Thus if it has a max of 51psi, I use ~41psi. This is a good starting point and adjust from there.
I also use a ~4psi spread front to rear for removal of understeer.
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