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Old 10-11-2005, 07:57 AM   #1
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Default How much does weight effect 1/4 mile et?

Is there a conversion for weight to et? I think I remember reading that every 100 lbs will add .1 of a second to the et. Is that true?
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Old 10-11-2005, 08:06 AM   #2
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thats what i have heard also
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Old 10-11-2005, 08:29 AM   #3
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It's close to that. Maybe .08-.10 but the faster you go that 100lbs of reduction wont' drop your ET as much. -Mark
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Old 10-11-2005, 08:35 AM   #4
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ive read that too, its about a tenth in the 1/4 mile. if your car is strip only start gutting your interior. lighter rims help too, skinnies up front.
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Old 10-11-2005, 11:27 AM   #5
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remember that sprung versus unsprung weight will yield different results.

For example 100 lbs lighter on wheels and tires, combined with rolling resistance, could give .15-.20 in e.t. difference.

100 lbs is close to 1 tenth, but as mentioned, faster cars see less of a gain than slower cars will.

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Old 10-11-2005, 11:34 AM   #6
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Doesn't matter if the weight is sprung vs. unsprung. I'm not sure where that rumor started from but its simple physics.

Lighter rotating parts help more than lighter static parts..
like wheels, drive shaft, disc's.. etc..
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Old 10-11-2005, 11:45 AM   #7
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does anyone know just how much lighter it is going from a factory 16" wheel and tire combo to a 15x3.5 pro star is??? i just put the fronts on lastnight and i could not believe the difference just by picking them up.
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Old 10-11-2005, 01:07 PM   #8
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Quote:
Originally Posted by imslow
does anyone know just how much lighter it is going from a factory 16" wheel and tire combo to a 15x3.5 pro star is??? i just put the fronts on lastnight and i could not believe the difference just by picking them up.
about 50 lbs
Weight reduction IS THE BEST MOD I have ever done to my car.
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Old 10-11-2005, 06:44 PM   #9
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Quote:
Originally Posted by Magnus
Doesn't matter if the weight is sprung vs. unsprung. I'm not sure where that rumor started from but its simple physics.

Lighter rotating parts help more than lighter static parts..
like wheels, drive shaft, disc's.. etc..
That was what I was trying to say, but guess I butchered up the word usage....

at least I used a good example..
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Old 10-11-2005, 06:44 PM
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