Brake rim weight reduction
Thread Starter
Instructor
Joined: Oct 2006
Posts: 159
Likes: 0
From: Jacksonville FL
Brake rotor weight reduction on Z06
Just a queston s I am looking to reduce rotating weight on my Z06 and yes I have become obsessed... LOL Has anyone replaced stock brake rotors with say Eradispeed or any others the reduce rotating mass by almost 4 lbs per rotor ??? I know the visual look is better. Just curious to how much HP equiv. reducing say 15 lbs of rotating weight is worth...Thanks... (Stock Rims I like the look)
Last edited by lubranjo; Aug 28, 2008 at 04:57 AM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
each lb of rotating wt is ~ 6.5 lbs of sprong wt
so 15 x 6.5 ~ 97.5 lbs removed from your car.
Ok make that 100 lbs, and ~ 10 hp increase
Stock rotors are 11 lbs fronts and 7 lbs rears
when looking at 2 piece rotors dont forget to add in the hat and hardware
so 15 x 6.5 ~ 97.5 lbs removed from your car.
Ok make that 100 lbs, and ~ 10 hp increase
Stock rotors are 11 lbs fronts and 7 lbs rears
when looking at 2 piece rotors dont forget to add in the hat and hardware
Burning Brakes
Joined: Sep 2001
Posts: 893
Likes: 38
From: ATX
Re the above post about weight savings...
How much 'weight' they save strongly depends on where the reduced mass is located. From a rotational perspective, reducing mass at a large radius is much more important than reducing mass at a small radius, i.e. losing 4 lbs off the hub or hat is much less advantageous than losing it off the edge of the rotor. Losing 1 lb off the tire is probably worth more than losing 4 lb off the hub (goes by r^2). The prob with brakes is... if you lose the weight off the rotor section, it'll change a lot of thermodymic effects so I'm not so sure it'd be worthwhile. They'll cool quicker, but they'd be more likely to warp, and they'll also heat more quickly...
From a non-rotational standpoint (suspension rebound), it won't matter where you lose it on the wheel/brake.
How much 'weight' they save strongly depends on where the reduced mass is located. From a rotational perspective, reducing mass at a large radius is much more important than reducing mass at a small radius, i.e. losing 4 lbs off the hub or hat is much less advantageous than losing it off the edge of the rotor. Losing 1 lb off the tire is probably worth more than losing 4 lb off the hub (goes by r^2). The prob with brakes is... if you lose the weight off the rotor section, it'll change a lot of thermodymic effects so I'm not so sure it'd be worthwhile. They'll cool quicker, but they'd be more likely to warp, and they'll also heat more quickly...
From a non-rotational standpoint (suspension rebound), it won't matter where you lose it on the wheel/brake.
