Brake Rotors/Discs
If removal of rear wheels proves difficult (frozen to the disc)
and the vehicle is 93/94 then watch for heat build up due to a
sticking rear calliper. If the wheel is simply sticking to the
hub/rotor via normal iron/steel-aluminium corrosion, apply copper
anti-seize grease between the two mating surfaces.
Grooved or drilled rotors are unnecessary for the street, modern
street brake pads do not require such alterations. In particular
drilling brake rotors reduces motor mass (hence a hotter disc) as
well as causing a heat gradient between areas around holes and
that between the holes. Cross drilled discs must be cast as Porsche
discs are, otherwise stress risers & cracks will result causing
rotor warpage, pulsating pedal and decreased braking efficiency.
Last Upload: 31st January, 2002. V1.50a
Brake Rotors/Discs
Front-rotor warpage is not usually from overzealous use, but from
miss-/over-torquing of wheel lug nuts (spec is circa 80lb/ft).
Driving
technique & brake-usage
When coming to a stop, aim to stop short by a few feet and then
ease up on the brake pedal - so allowing the pads to cool slightly,
reducing rotor grooving & limiting rotor warpage.
Glazed
Brake Pads
Grooved rotors can prevent glazed brake pads, although usually
a change to a better brake pad will resolve the problem.
URL: http://homepage.ntlworld.com/dorothy.bradbury/probemx/p_ws5.htm