01-17-2006, 07:30 PM | #1 |
Senior Member
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Air Pressure
Question for all you great minds to help the simple minded like me. Why is the recommended air presure on a tire listed as 44lbs. and when inflated to that presure, especially on a performance radial, the car is almost impossible to drive? My wife had her Nittos on her Solora rotated and balanced and of coarse they changed the air presure that I had them, which was about 30-32lbs. This evening she said that car was hard to drive on the interstate with the presure that was in the tires. Any clues or help?
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01-17-2006, 07:59 PM | #2 |
3v's are slow
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Re: Air Presure
that is MAX rating not recommended rating. Nobody should ever run a street tire at 40 psi. Its dangerous. Somebody didn't know what they were doing
Recommended tire pressure are located in your car. (on either the door jams, glovebox, etc.. Its a silver decal on most vehicles)
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01-17-2006, 07:59 PM | #3 |
Daddy x4 ...we're done
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Re: Air Presure
The recommended air pressure should be listed on the inside door sticker of your car. 44psi sounds more like a maximum pressure rating for the tire.
I usually run 32psi in all my street tires and when I had drag radials, I ran 24-28psi on the street.
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01-17-2006, 09:35 PM | #4 |
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Re: Air Presure
That is what I thought, and that is usually what I run 30-32psi. But then pray tell me why these guys, at these tire stores want to put so much air in tires?
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01-18-2006, 02:57 AM | #5 | |
Friends
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Re: Air Presure
Quote:
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01-18-2006, 03:48 AM | #6 | |
3v's are slow
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Re: Air Presure
Quote:
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2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
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01-18-2006, 07:37 AM | #7 |
Im gonna show her my...
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Re: Air Presure
I run 65psi on a set of Nitto 555R's. They handled and hooked great! Don't believe me, ask Jugg.
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01-18-2006, 09:50 AM | #8 |
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Re: Air Presure
lower profile tires handle much better at the higher pressures on tracks and autox....not good for teh daily driving though ....especially where I live with the crappy roads
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01-18-2006, 10:23 AM | #9 |
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Re: Air Presure
For hard cornering, higher pressures are necessary to cut down on sidewall flex. It does make them ride rougher and wear more toward the middle, though. I run about 26 - 28 psi in my front tires (Kuhmo Ecsta MX 275/40) and 25 psi in the rears (Nitto 555R 315/35).
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01-18-2006, 02:11 PM | #10 |
The Kocky One
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Re: Air Presure
Now that I think about it, I need to drop the air pressure in my nitto drags, I'm running 32psi, I believe.
I actually run max pressure in my DD truck tires. Better fuel economy that way. I picked up about 1/2 mpg doing so, believe it or not.
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