Lemon Aid + Bad Brakes on '96 850 turbo

I have what I consider to be a legitimate concern about my '96 850 turbo.

The 850 has a reputation for brake rotors that warp. Earlier years are
worse than later ones, I *think*. Nonetheless, my car will stop very
smooth at speeds under 60mph. However, one day I was driving a bit fast
after having passed another car, and had the occasion to apply the brakes
at 85mph. Not only did the car shudder horribly, I could also tell I was
not slowing down very much at all! Quite scary really.

So I'm looking at cross drilled rotors to get relief. My tech says thats
about the only way to reliably "fix" this issue. My questions:
1. Arecross drilled (Brembo) rotors safe?
2. Why does the 850's rotors warp?

Anything else you might add appreciated.

Thanks!

PS. I reference Lemon-Aid as I have been reading about safety concerns on
thier web site and wonder if this isn't also a safety concern. Never mind
the ABS ecu is haywire on my car! (US $275)

 

Because the wheel bolts were not properly torqued when you or someone
else changed the tires. The owners manual specifies the correct torque.
Unfortunately the car doesn't come with a torque wrench, just a lug
wrench. The newer hubs and wheels are better designed to prevent this.
I always insisted that Sears torque my lug nuts when they serviced my
850s' tires and I never had any problems. They don't like doing it, but
they have the right equipment if you make them use it.