Drag tires for 20's?

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Nov 30, 2004 | 07:13 PM

#61

tooquick2beslo

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From: Newport News, Va

Quote:

Originally Posted by unklej

Well, yes and no. I was making a guess where the heart of the mass would be on the wheel and tire combo. So the overall diameter would be 30". Anyway, that equation is really not valid if you want to get the actual moment of inertia for a rim and tire, it was just used to simplify the explanation.

If you want true moments of inertia, I would recommend modeling the rim in tire in a 3-D CAD software and use the mass calculator to fine the true moment of inertia.

Jeff

Gotcha. I wasnt even thinking about the whole diameter of the wheel. My mistake. The only way to use that formula would probably be with the wheel off the tire, since the tire would flex under load. Not giving you a correct diameter all the time. Tires flex when in motion.

You are right though probably would need some CAD design to work out the problem correctly.

Nov 30, 2004 | 07:17 PM

#62

moregrip

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what a rush!

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From: Wyoming

Quote:

Originally Posted by tooquick2beslo

I'm not the sharpest nail, but wouldn't that be tire off the wheel?

Nov 30, 2004 | 07:20 PM

#63

unklej

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From: Randolph, NJ

Quote:

Originally Posted by moregrip

I'm not the sharpest nail, but wouldn't that be tire off the wheel?

Now that's funny

Nov 30, 2004 | 07:21 PM

#64

tooquick2beslo

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From: Newport News, Va

Quote:

Originally Posted by moregrip

I'm not the sharpest nail, but wouldn't that be tire off the wheel?

Correct. That was a little mess up on my part.

Nov 30, 2004 | 07:31 PM

#65

moregrip

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what a rush!

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From: Wyoming

Quote:

Originally Posted by tooquick2beslo

Correct. That was a little mess up on my part.

don't feel bad, I'm the guy that wants 20" drag tires, remember?

Dec 1, 2004 | 12:26 AM

#66

02-4.8

Launching!

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From: Houston

Quote:

Originally Posted by BlownChevy

Had a shitty day here, and I was about to take it out on this thread

.....so if I came of like and ******* sorry.

Send me a free radix and I wont tell your boss

Dec 1, 2004 | 02:32 AM

#67

chris99gmc

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From: Cali

I'm trying to hit 12's on my 22's. but I think I am going to need a locking rear and a good 4 link to help me out.

Dec 1, 2004 | 05:29 AM

#68

one03sierra

Formerly one92rs

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From: league city texas

damn all this talk on 20's. and now i am wanting 20's instaed of my 18's.

oh and unklj you said that you work for the gov>>

:alien:

Dec 1, 2004 | 07:14 AM

#69

smooth sierra

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From: HOUSTON, TX

you guys are trying to compare apples to apples. My centerline 20's are LIGHTER than the factory wheels. overall diameter plays a much larger part than wheel diameter. that is why a truck with 35" or 38" tires works the brakes out harder. most people notice the difference when going to 20's or 22's because of the OVERALL DIAMETER increasing 2" in most cases. not where the weight is in relation to the hub. go put 32 or 33" tires on your 16" factory rim and see if they aren't harder to turn over and stop.