jburt

Does anyone know how much the stock C6 polished wheels weigh w/o tires?

Gearhead Jim

http://forums.corvetteforum.com/c6-c...it-spokes.html

This outta fix you up!

jburt

Thanks for the info. I'm looking at a set of vossen wheels, cast unfortunately bc I'm on a budget. It looks like they're gonna weigh about 3lbs more than the stock ones per wheel. Do you think I'll be able to tell a difference in the cars performanc due to the extra unsprung weight?

Gearhead Jim

I'm not aware of any comparison test on ride and handling. My guess is that a bumpy surface would give a little more skitter because the heavier wheel/tire assembly would have a tougher time following the pavement contour. But how much more???

I've heard it said that 1 lb of rotating weight is about equal to 4 lbs of fixed weight. So, 12 lbs of extra wheels would be about equal to 48 lbs in the trunk.

I don't like spending big bucks for wheels that are inferior, performance wise, to the inexpensive stock wheels.

easyrider13

It depends upon how you drive.
For general use, you probaly won't notice any difference.
If you take it on a sports car track, it's a different story.

rchbn

But if you have full tank of gas when at the track and gasoline weighs about 8 lbs per gallon that's 144 lbs of extra weight or a small co-pilot. So I don't think 3lbs per wheel adds up to much. IMHO

Polizzio

For the record, water weighs 8 lbs/gallon. Gasoline weighs about 6.2 lbs/gallon, for the record. Its my business, fuels production.

rchbn

Thank you for the correction. Now I know.

HOXXOH

Here's some weight testing I did in the Spring. It appears that there is little, if any, factor when comparing static to rotating weight. I plan to do more testing on the rotating weight aspect before the end of the year.

http://forums.corvetteforum.com/c6-t...ght-tests.html

Polizzio

Wow. Your execution and results are impressive in the other thread, simply blows away generic statements of 4 to 1 unsprung weight to sprung reduction, and its vehicle acceleration impact. Excellent job, thx for the data.

Gearhead Jim

I've been following your thread and really appreciate your work.


As I read it, the relationship of fixed weight to ET is proving out well. But the rotating weight issue still seems a bit under-explored. Hopefully, you'll be able to extend your testing so we can know instead of guessing.

As mentioned in your thread, the location of the rotating weight is probably significant. Center caps made of lead probably would be right at 1 to 1. Tires made of lead would probably be a different story.

Since we now know the effect of 100 lbs of fixed weight, can someone do the math to figure out the rotational velocity of a certain spot on the wheel at about 110 mph and work from there?

Keep up the good work!

Jims2001

Hey, Gearhead thanks for the link.

Corvalex

Hello friends of performance!
Does anyone know the weight of these rims?

Corvalex

Nobody??