[s-cars] 16" Avus wheels and ECS Stage 3

Jim Gates jim at gates-home.com
Wed Sep 16 10:44:59 PDT 2009


This discussion brings up two things that I've been pondering for a while.
The torque leverage of a larger rotor and pressure applied to the disc would
really only help with brake feel (pedal pressure and modulation) and not
actual stopping power, correct?  Larger rotors and pads have a higher heat
sink capacity and allow more repeated stops without fade.  Also correct?

Actual stopping distances will depend almost solely on the tire/road
interface based on locking the tires up, right?  Therefore tires determine
stopping effectiveness in a much larger degree than the size of the
brakes...???  So, bigger brakes would be beneficial for the track where
large amounts of heat dissipation are required but not necessarily on the
street.  If you can lock up your brakes (or activate ABS) you are not going
to stop any quicker in a normal street braking event with bigger brakes.
They may feel better and allow you to apply less pressure to the pedal but
they don't really allow you to stop any quicker.  Someone explain the
physics to me if I'm off.

Jim


Steve-
I don't know- the greater brake torque of the larger rotor would help. I
have not researched this stuff any further than circa 2002 or 2003 because I
have not had my 200 since late 2004.

I think that larger rear rotors is a waste of money- they don't do that much
of the braking as it is.

When you say stock caliper, I take that to mean a 993tt caliper with a
larger rotor (larger than the 322mm stock rotors, right?).

Do you really need that much larger of a brake rotor? I would look at
improving traction before doing that unless you're fading Big Reds with race
pads and fluid.

Taka




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