19" wheels: How much of an issue is 27 lbs additional unsprung weight?? - Page 2 - 6SpeedOnline

Feb 4, 2007 | 02:07 AM

#16

RobbieX50

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Quote:

Originally Posted by Shark01

I've always thought it was like a 4:1 ratio....don't make me yank out the kinematics books

I dare you

Feb 4, 2007 | 04:05 AM

#17

Divexxtreme

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Quote:

Originally Posted by RobbieX50

Thanks Scott!

That is not as bad as I had originally thought. I think I will keep the wheels now.

BTW, I thought I read years ago that increasing unsprung by 1 pound was like adding 6 or 7 pounds to the car. However, I have no idea where I read this.

Thanks again.
Rob

I read it previously as well. Also read 4 lbs for every 1. All of them are urban legends.

It's app. 2 lbs for tires, 1.5 lbs for wheels (since their mass is closer to center). But yes, as Joe said; lighter is always better.

Feb 4, 2007 | 05:14 PM

#18

K24madness

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FWIW I found the same to be true going from stock wheels and tires to fiskes with cup tires. It felt like going to a LWFW. After that I am now very aware of weight around the wheels. In the drag racing circles they say this is one place to really focus on weight loss.