I had the EXACT same problem with my '96 Suburban.  The brakes would get a
real workout in the mountains.  They'd overheat and I'd have to change
rotors out every 3-4 months to cure brake shudder...  a VERY expensive fix.
The rotors were really too small for that beast of a vehicle.  

I installed same-size cross-drilled rotors with ceramic pads and I never had
another problem.  I'm sure that there is a machine shop around that can
drill them if the problem is chronic.  There is a left and right pattern for
drilling.  Now, the question is - Is this safe for our airplanes?...

Richard Freilich

P.S.  Good luck (and safe flying) to all those racing at Reno this year.