17" Rims - How light is light?

[Soya]

Juz curious, what is deemed as 'light' for 17" rims? Some taiwan rims are like 9kg and some jap ones abt 8.0-8.5kg. Views pls.

[Furrynadz]

<6kg

[Soya]

oic....would u happen to know stock 16" rims usually how heavy?

[Wahlao]

 

maybe possible for forged rims, but cast rims should be heavier

[Soya]

<6kg 17" rim would oso probably cost over $700-$800/pc.

 

Maybe i shld rephrase my question:

 

How light is light for a Cast 17" rim?

[Bluecity]

wah 17" <6kg... think not so safe for high speed travelling.

[Duckduck]

5Zigen ProRace is around 7+ kg per rim. BTW, mine are for sale 4/100PCD the ones in my avatar :)

[Lightspeed]

Looking to changing to lighter rims?

[Soya]

asking for general knowledge onli mah.

[Soya]

oic....read somewhere b4 that every kg of unsprung weight is equilvalent to dunno how many bhp or something lidat. anyone knows?

[Lightspeed]

I gave up on lighter rims liao... cost a bomb So now stuck with our heavy ones

[Andrewkb]

From my memory, every kg of unsprung weight reduced is equivalent to 10kg on top

[Duckduck]

think that is true if rim diameter is a constant.

[Soya]

so if every rim is 2kg lighter, that's equivalent to 80kg saving?

[Soya]

ok, what if overall weight increase by 1kg/rim but overall diameter is smaller, say, 1.5%? does that translate into any reduction in inertia?

[Andrewkb]

Yeap ! And don't forget the tyre weight.

 

For a guage:

AD07: 22lb

DZ101: 22lb

RevSpec II: 21lb

Goodrich g-Force: 24lb

CSC2: 18lb

[Soya]

where can u find info on the tyre weights? wonder how heavy are 215/45/17 F1s?

[Magfocus]

I would like to know how much F1 weighs too