[s-cars] UrS4 brake hardware question

Taka Mizutani t44tqtro at gmail.com
Wed Oct 3 12:27:10 PDT 2007

For street use, that statement is just not correct- you're limited by tire
traction for one stop- the stock brakes work just fine.

There is no "extra pad performance"- if you have enough grip to lock the
front wheels, going to an even higher coefficient of friction pad, a larger
rotor or greater clamping force (which is limited more by how hard you can
push the pedal and the mechanical advantage afforded by the brake assist
system) isn't going to make a bit of difference.

That is not the case with repeated stops without sufficient time to cool the
brakes, but we're not talking about that.

Larger rotors, higher coefficient pads, fixed calipers, multipiston
calipers, etc. only affect pedal feel. You can brake more effectively if
your pedal feel improves to the point that you can modulate your braking to
the traction limit more easily. That still doesn't change the fact that you
are far more limited by tire traction (again, we're not talking about
braking situations on a closed course with racing compound tires).


On 10/3/07, LL - NY <larrycleung at gmail.com> wrote:
> Also, quick note, yes, I know we are not doing a car to car comparison. IF
> the stock G60's are capable of locking
> up Miss Piggy for ONE stop, than the extra pad performance will work for
> decent performance (for a stop or two).
> They just won't be able to keep up that activity for very long. (brake)
> Torque is torque, whether derived by greater
> frictional coefficient, greater clamping force (not happening here), or
> greater rotor diameter (also not happening
> in the spirit of this thread) giving greater mechanical advantage.
> LL - NY

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