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post #1 of 7 (permalink) Old 10-30-2005 Thread Starter
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tire width

this is kind of directed towards kscoyote, as he told me that the size of my tires could slow me down significantally and make my shifts less aggressive .. but will 255 tires slow me down considerably as you were suggesting?

(or anyone else that would like to respond)

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post #2 of 7 (permalink) Old 10-31-2005
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those will work fine. The main thing that will slow you down is size and width. Kinda the same aspect as drag racers, bigger tire up front smaller in the rear for a rear wheel drive car.


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post #3 of 7 (permalink) Old 10-31-2005 Thread Starter
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Quote:
Originally Posted by lcurle
those will work fine. The main thing that will slow you down is size and width. Kinda the same aspect as drag racers, bigger tire up front smaller in the rear for a rear wheel drive car.
i thought the 255 was the width?
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post #4 of 7 (permalink) Old 10-31-2005
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Quote:
Originally Posted by Beyond
i thought the 255 was the width?
the heavier the combination, and the farther towards the edge the weight is carried will slow you down as far as acceleration.

The width alone is a factor of air resistance, which is why professional drag racers use skinny tires up front for 100+ mph runs, the resistance can be considerable.

but as far as hooking, and torque, your fastest rear wheel combination should be wide enough to get traction with a little wheelspin, and the smaller diameter of rim that you can fit the better. It distributes the weight closer to the hub (rotational mass goes down) and the tire has less material in the sidewall (rotational weight goes down as does overall mass).

This is NOT the choice for road race or autocross, where acceleration is not as important, and lightweight sidewalls flex too much.

but the larger the diameter of the wheel and the shorter the sidewall, the higher the rotational mass, and the more torque it takes to turn them. The result is less acceleration.

If you sit and spin on a bar stool, you'll see what happens when you extend your legs, then pull them back in, your MASS is the same, but when you extend your legs you'll slow down, pull them back in, and you'll speed up.

Does that make sense?

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #5 of 7 (permalink) Old 10-31-2005
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I take it you have actually tested the barstool theory Ks

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post #6 of 7 (permalink) Old 10-31-2005
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Quote:
Originally Posted by lcurle
I take it you have actually tested the barstool theory Ks
yep!


:kooky:

Trying to stay on is the tricky part!

seriously, it WAS a physics experiment in General Physics . . .

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #7 of 7 (permalink) Old 10-31-2005 Thread Starter
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Quote:
Originally Posted by kscoyote
yep!


:kooky:

Trying to stay on is the tricky part!

seriously, it WAS a physics experiment in General Physics . . .
yeah, i get what you're saying. thanks...
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