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#1
02-03-2005, 10:10 AM
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tire pressure?
Do any of you guys let any tire pressure out when you go out for a night of racing?
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#2
02-03-2005, 11:01 AM
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Re: tire pressure?
not for around town racing, only when i go to the track.
__________________
BP's Rides; - 2005 Kawasaki Ninja ZX6R- Mods: ECU Jumper, Akrapovic Slip-on, Power Commander III, 8000K HID's. - 2K2 Maxima 6 Speed-Mods: Advanced Timing, Cattman Cat-back Exhaust, H&R Springs, Tokico Illumina Struts, Konig Theory 19" Rims.    
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#3
02-03-2005, 11:09 AM
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Re: tire pressure?
i actually dont even let tire pressure out when at the track. For some reason my car sticks very well at the line.
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#4
02-03-2005, 11:16 AM
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Re: tire pressure?
well i was thinking about it as more of a safety thing. cause when going at higher speeds the air molecules inside the tire start to move more violently causing added pressure on the weaker spots of the tire. thus changing the shape of the tire and raising the pressure inside of the tire. am i wrong?
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#5
02-03-2005, 11:46 AM
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Re: tire pressure?
Ideal hot tire pressure for best handling is generally somwhere from 36-44 PSI depending on the tire. In a drag race or street race, lowering the pressures on the drive wheels will help the initial launch because of the softer sidewall spring rate and increased contact patch. Unless you're running your tire pressures rediculously high to begin with, tire pressure bildup is not really a safety issue.
__________________
2004 Subaru Impreza WRX STI (daily driver)  1999 Mazda Miata (track car, slow, but finished the SCCA Runoffs)  1987 Porsche 944 (being rebuilt) 
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#6
02-03-2005, 11:52 AM
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Re: tire pressure?
wont 36-44psi at high speeds cause a smaller contact patch causing less control?
__________________
My Cardomain Page
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#7
02-03-2005, 11:55 AM
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Re: Re: tire pressure?
Quote:
 The tire pressure increases because of the heat generated by friction between the road and the tire - not because the air molecules in the tire are moving violently!...unless your thinking about top fuel funny cars. Those tires change shape when they launch because of centrifugal force.
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#9
02-03-2005, 12:11 PM
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Re: tire pressure?
I'm not an expert on the subject, but I'm not sure if the air inside a tire even moves that much when the tire is spinning - kind of like how the air inside a jumbo jet doesn't move even though the plane itself is flying 600mph. It's not like there's fan blades inside the tire to disrupt the atmosphere.
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#10
02-03-2005, 12:13 PM
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Re: tire pressure?
Boring
 L8...
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#12
02-03-2005, 12:20 PM
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Re: tire pressure?
when molecules get hotter they expand. like an apple pie...when its cold you really dont smell it but when it gets heated the molecules expand and become more active, giving off the smell. I think thats what i was taght.
 all well not like it really matters anyways
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My Cardomain Page
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#13
02-03-2005, 12:24 PM
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Re: Re: Re: tire pressure?
Quote:
 . L8
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#14
02-03-2005, 12:29 PM
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Re: tire pressure?
wow..Math and physics...Im out
__________________
2006 Redline Red Nissan 350Z Base K&N|Falken I am just that JDM tight, yo.
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#15
02-03-2005, 12:35 PM
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Re: tire pressure?
Yeah, both classes I failed miserably in. I fell asleep 85% of the time I was in them, but yet I graduated.
Schools, you wonder why half the people in this world are idiots. They just push you in and out like it's not going to affect the world. L8...
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