Help me build my Stage III s4
05-02-2006, 05:29 PM
#41
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Yes. They're simply a larger heat sink for the energy to be dumped into. The
tires are what are going to stop the vehicle. It's like upgrading the intercooler on this car, a larger mass provides more storage for all the heat energy, so it doesn't warm as fast when the energy is being dumped into it. Being larger there's then more surface area to shed that heat into the atmosphere more rapidly. The question is, when do you heat soak the IC, or brakes, to the point that they lose effectiveness. Depends on a bunch of things, which is why stating a BBK is needed is poor advice.
And the bit about the stock brakes being sloppy is purely personal opinion. If that were the case stainless steel brake lines would be a better upgrade than doing the entire big bucks brake upgrade to try and get rid of perceived sloppiness.
And the bit about the stock brakes being sloppy is purely personal opinion. If that were the case stainless steel brake lines would be a better upgrade than doing the entire big bucks brake upgrade to try and get rid of perceived sloppiness.
05-02-2006, 05:42 PM
#43
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you're out of your element
<inside joke of sorts, no offense to be taken 
>
I urge you to drive a car with
a) stock calipers
b) stock calipers with SS lines
c) stoptech/brembo calipers
d) alcon calipers
You will feel a difference between all of these arrangements. Calipers have a HUGE influence on how the driver is able to control braking - modulation, bite, release - when you get your car to dance on the fine line that defines the traction circle, having complete and accurate control of ALL of inputs (including braking) is of utmost importance.
Don't take my word for it though, go out and see for yourself. Having excellent brakes is kind of like having a Tivo - when you don't have them you don't think much about it, but once you have them, you can't live without them!
>I urge you to drive a car with
a) stock calipers
b) stock calipers with SS lines
c) stoptech/brembo calipers
d) alcon calipers
You will feel a difference between all of these arrangements. Calipers have a HUGE influence on how the driver is able to control braking - modulation, bite, release - when you get your car to dance on the fine line that defines the traction circle, having complete and accurate control of ALL of inputs (including braking) is of utmost importance.
Don't take my word for it though, go out and see for yourself. Having excellent brakes is kind of like having a Tivo - when you don't have them you don't think much about it, but once you have them, you can't live without them!
05-02-2006, 10:14 PM
#45
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Sounds to me like you've never been in a tuned S4 before ! You do know that
brake horsepower can be measured, right ? A 400-500 hp, 3600 lb car needs all the brake horsepower it can get. If I had stock brakes on my S4 and went to the track, I'd be risking my life after one lap.
Stock S4 calipers are well built, but the rotors bow out very early when heated up.
You are giving out seriously bad advice here !!
Stock S4 calipers are well built, but the rotors bow out very early when heated up.
You are giving out seriously bad advice here !!
05-03-2006, 06:47 AM
#50
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Could you explain further how a car that is a daily driver must have
upgraded brakes simply because it has 400+ HP? I'm not following how brake size should be a function of engine horsepower.
The term 'brake horsepower' has nothing to do with the cars brakes, it refers to a 'brake' that is part of the measuring equipment to determine the engines horsepower level.
I don't believe I said upgraded brakes were absolutely unnecessary on a track. I said it depended on some things that we don't know. I accept that you may need upgraded brakes at a track, but that's a function of where and how you drive as well as the other parts on your car. The guy posting may not, just because you need larger brakes doesn't mean he does as well.
The term 'brake horsepower' has nothing to do with the cars brakes, it refers to a 'brake' that is part of the measuring equipment to determine the engines horsepower level.
I don't believe I said upgraded brakes were absolutely unnecessary on a track. I said it depended on some things that we don't know. I accept that you may need upgraded brakes at a track, but that's a function of where and how you drive as well as the other parts on your car. The guy posting may not, just because you need larger brakes doesn't mean he does as well.