I seriously doubt any of those gains with slotted and drilled rotors mentioned here, in fact I bet the differences you guys felt were only because of fresh pads and rotors.

drilled rotors again will only help prevent fade, overheating and warping,

stopping shorter requires higher traction or higher clamping force on the rotor, which slotted and drilled rotor will not provide

 

So a better compound pad combined with more efficient rotors makes no difference?

 

it makes a difference in that it allows the rotor to vent faster staying cooler in strenuous situations (i.e. towing) to prevent the pads from burning or glazing. to get the best, most noticable results you would need a caliper with a higher clamping force, not drilled or slotted rotors.

 

negligible

pad compounds and different rotors just help prevent fade, or dust

like I said if you had a brake feel difference the difference was either caused by you wanting to feel the difference from your purchase, or your old pads and rotors were gone

dont believe me read Baer's article

+1, or a bigger diameter rotor or multiple piston calipers

 

I' m just wondering, Have any of you guys that say that slotted and cross drilled rotors will make no difference actually driven a vehicle with with the rotors and pads?

My wife even noticed the difference in the stopping power. She only drives my Jeep once in a great while.

 

1995 Cutlass. Drilled and slotted rotors with "high performance" pads. No significant decrease in stopping distance (1 foot in 60-0 compared to stock pads and rotors)

The only time they contribute to shorter stopping distance is when they are under constant use. Even then without the addition of higher clamping force calipers the effects are marginal.

 

I have a 1997 Trans Am WS-6 that I use to regularly race in SCCA solo-2, like I said, no difference in regular driving, heavy braking in road courses, yes there is a difference, but its only for preventing fade

let me reiterate only way to decrease stopping distance is to increase clamping force of the caliper, increase the rotor surface area, improve traction, i.e. suspension upgrades, wider/stickier tires

seat of your pants testing is very subjective