mike c.

iTrader: (1)

Looking to lose some weight but can't go drag since it's a street car. I already have a tube frontend,so i'm loking at the brakes. If they are lighter,how much?? Thanks, mike c.

ssam98

iTrader: (5)

yes the bear rotors are lighter and better made and wont warp.

99FormulaM6r

iTrader: (2)

I have a hard time believing that drilled/slotted rotors WONT warp. Anything drilled is more prone to cracking, and the drills and slots take structural integrity away from the solid rotor, as well as cause them to heat up faster (less material). A blank is always going to be the best choice for braking performance and durability.....but if the slight trade off is worth saving a little weight I guess it's worth it. I can't answer how much less they'd weigh, maybe google it?

mike c.

iTrader: (1)

Thanks. Looking for weight savings any where i can with out gutting my car.

Element

iTrader: (5)

The inevitable problems with most drilled and slotted brake rotors aren't worth the absolutely minimal (2lbs per rotor, at most?) weight "savings" drilled and slotted rotors would give you.

EchoMirage

iTrader: (3)

youre talking ounces, if anything, 'saved' from drilled. they are stupid and only for looks, nothing else. youd lose more weight taking the floormats out then going to drilled rotors.

z28bryan

iTrader: (7)

Probably lose more unsprung weight with lighter front wheels

MasterV8

iTrader: (7)

I did weigh mine when I swapped to baers & it was 2lbs per rotor & yes I bought mine for cosmetic looks.

t/a98

iTrader: (6)

Unsprung weight is alot different that sprung. Also brakes are part of the drivetrain, so loosing weight in the brakes sounds like a double good deal, as long as you aren't a roadracer and need the blanks benefits.

Element

iTrader: (5)

It's not that there are benefits to blanks over drilled and slotted, it's the numerous disadvantages of drilled and slotted compared to blanks; plus, as shown, it's an absolutely negligible change in weight.

mike c.

iTrader: (1)

WOW,only 4lbs. not worth the weight and money when i just replaced my brakes with factory replacemants. Thanks alot guys.

spy2520

iTrader: (3)

Sounds like glass half full/half empty to me. But also, not only does drills/slots lower the mass of the rotor, it can give less surface area to the rotor, further reducing heat dissipation.

Element

iTrader: (5)

Yep, that's one of the disadvantages, as well as creating less swept surface, meaning less friction, meaning less braking power.

ssam98

iTrader: (5)

Some one should tell GM, BMW, and the other high in car comp this info.

JD_AMG

Here we go again
Check out their race cars that use iron rotors, you will see slotted rotors, but not drilled. While you are at it check out the major name brand brake companies and what that have to say about track use with drilled rotors (or what some say about drilled rotors in general).
Drilled rotors used to be useful back when pads expelled gas, modern day pads don't though.

Sam Strano

iTrader: (41)

Because god knows that car companies never do anything blingy to their cars! And all those cars when raced use cross-drilled rotors. Wait... no, they don't!

Why does this subject come up a million times over? It's physics people... Drilled rotors offer less mass to deal with heat. They offer less swept area for the pads to contact. They create tubulence in the vaning of the rotor. You see no race cars (where performance sort of matters) running them for those reasons. Yeah, you see some street car with them, but then again I see Z06's come with one brake rotor running backwards too-----direct from GM.

z28bryan

iTrader: (7)

Yeah but GM did it so it must be right...