i dont know if i have too much stopping power, i have 912 tires 195/50/15 under 1000 miles, but they don't grip the dry road well, it make sound when i stomp on the brake pedal,
i have upgraded to synethic blend brake fluid, brake lines and axxis ultimate

any body else have this?

 

I have the same tires and they grip the road like no other tire I have ever used. I can drive my car like a crazed mad man and they still will not lose traction. I drive my car like I stole and there tires are really good. Way better than the Goodyear and Yokohamas I used to have

 

how about those rotors? are they warped?
the sound only happens when you brake? i dont think it's the tires ...

 

its tire sound, like the sound of losing traction
it only happen when i hit the brake pedal all the way down to the metal in a flash timing

 

It's an obvious thing but....
I'd see what your tire pressure is. Higher pressure will make it brake funny and corner funny.
If your at a cold tire pressure 29-35 psi you should be good.

My Falken 512s are great tires.

 

Weirdeness. I'm running 205/55-15 912's on some 15x7 +38 wheels & I have no issues or anything of the sort. I was running the same sized 512's before these & those were really good. These new 912's are far better.

 

Running 195/60/15 912's on my xA's stock steelies, and they are working absolutely great.

Definitely much quieter and have excellent grip.
Can't say I've been experiencing what you have been.

 

when you stomp on the pedal, that may be the ABS chirping the tires. preventing a tire lock up so you can still steer the car. this is normal. try a hard stop somewhere without locking them up.

also if the pedal feels funky, flush the brake system again, you may have some water in the lines. or did you flush the old system out with the new stuff?

are you auto-X ing? why the brake fluid type change? should have gone with standard or full synthetic. what does this really do for a lightweight vehicle like ours? i can stop on a dime with my factory brakes and Toyota original brake fluid.

 

no problems here

 

sound like you have too much stopping power as you said....

I mean I have 215/35 and 225/40s and mine never screech...they grip way too good...lol