Reducing the rotational unsprung mass - wheel weight reduction benefits

[geordie56]

Get the TT arms, track rod ends and hubs John along with the td's, all together as a whole you will notice a hell of a   

[the bruce]

http://www.e90post.com/forums/showthread.php?t=243069

http://www.zerotohundred.com/newforums/car-talk/21942-how-heavy-are-your-wheels.html

http://www.wheelweights.net/

http://www.a4-freunde.com/forum/showthread.php?106650-Reifengewichte

For those of us who are able to read German:

http://www.ucke.de/christian/physik/medprakt/Traegheit.PDF


To keep it simple:

acceleration/deceleration factor:

brake disc: ~ 2
rim:  4 - 5
tyre:  ~ 7

Of course reducing all unsprung weight (wheels, suspension arms, spindles, brake discs and calipers,
half of drive shafts, springs and dampers) helps traction and ride comfort and reduces suspension wear.

[Top Cat]

Good thing i got my superleggeras then john 

Yup, my new alloys should be here tomorrow

Yours probably save around 5kg a corner over stock too

Cant add anything to your quest for knowledge, but i bet my wheels are lighter than yours. 

5.65 kg (front) and 7.75 kg (rear).  production wheels too, non of this aftermarket stuff. 

[keano]

Good thing i got my superleggeras then john 

Yup, my new alloys should be here tomorrow

Yours probably save around 5kg a corner over stock too

Cant add anything to your quest for knowledge, but i bet my wheels are lighter than yours. 

 

[Hurdy]

Good thing i got my superleggeras then john 

Yup, my new alloys should be here tomorrow

Yours probably save around 5kg a corner over stock too

Cant add anything to your quest for knowledge, but i bet my wheels are lighter than yours. 

5.65 kg (front) and 7.75 kg (rear).  production wheels too, non of this aftermarket stuff. 

Yes, but if you had a proper sized car...........

I read the list of lightweight bits you have on your Exige ....and it is impressive.

[RedRobin]

.
Hmm.... Saving 3 kg per wheel and saving 5 kg per front brake = I must be doing something right.

[Beddie]

Good thing i got my superleggeras then john 

Yup, my new alloys should be here tomorrow

Yours probably save around 5kg a corner over stock too

Cant add anything to your quest for knowledge, but i bet my wheels are lighter than yours. 

5.65 kg (front) and 7.75 kg (rear).  production wheels too, non of this aftermarket stuff. 

Yes, but if you had a proper sized car...........

I read the list of lightweight bits you have on your Exige ....and it is impressive.

Trouble is, any weight saving is cancelled out by having to buy another car for the other foot...

[rich83]

 

[Janner_Sy]

John do you remember the weight saving the TD1.2 alloys gave over the stock 17" polo rims?

[Hurdy]

John do you remember the weight saving the TD1.2 alloys gave over the stock 17" polo rims?

I think it was around 2.7kg, but I'll have to check