Chevrolet 2012 Corvette Owner's Manual page 313

Some driving conditions or
climates can cause a brake squeal
when the brakes are first applied
or lightly applied. This does not
mean something is wrong with
the brakes.
Brake linings should always be
replaced as complete axle sets.
Brake Wear (ZR1, Z06, and
Grand Sport Only)
The ZR1, Z06, and Grand Sport
models do not have built-in brake
pad wear indicators and periodic
visual inspection of the brake pads
is required to determine when to
replace the brake pads.
Notice: Continuing to drive with
worn-out brake pads could result
in costly brake repair.
Make sure that the brakes have
been given sufficient time to cool
and then set the park brake.
Rear
Vehicle Care
Front
Brake pads can be visually
inspected through the wheel by
inspecting the outer brake pads
at each wheel.
Brake pads should be replaced
when worn to 2 mm of pad
thickness. New pads are
10 mm thick.
In addition, brake pad inspection
is required any time the tires are
removed.
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