Chevrolet 2015 Corvette Owner's Manual page 173

9-6 Driving and Operating
Caution (Continued)
long or as fast the first time the
vehicle is driven on the track or
raced.
The rear axle fluid temperatures
may be higher than when driving in
severe conditions. Drain and refill
with new fluid after the first racing or
competitive driving event, and then
after every 24 hours of racing or
competitive driving. See
Recommended Fluids and
Lubricants on page 11-4.
General Information
If reduced performance is
experienced during track events or
competitive driving, turning off the
A/C will help to improve engine
performance.
Maintain a mixture of 40%
DEX-COOL coolant and 60% clean,
drinkable water to optimise engine
performance.
The front number plate bracket or
aero panel should be removed for
track events and competitive driving
to improve engine performance.
Rotor Cooling Ring
The following installation procedure
is only to be used if the vehicle is
equipped with front dual cast brake
discs along with the supplied brake
cooling ring kit. See your retailer for
information.
If the vehicle is equipped with a
one-piece brake disc, a cooling ring
is not required.
Caution
Do not leave rotor cooling rings
installed after a track event, as
this can cause corrosion with
long-term use. Rotor cooling rings
are for track use only. Track
driving without the rotor cooling
rings may result in brake
pedal fade.
Installation:
1. Remove the front wheels.
2. Cut three 150 mm (6 in) lengths
of safety wire specified to T304
Stainless Steel, 0.041 in nominal
diameter, not included.
3. Form each into a U shape with a
20 mm (0.75 in) flat area in the
centre of the wire.
4. Place the rotor ring in the gap
between the rotor brake plate
and rotor hat, with the holes on
each side of the rotor spoke on
the outboard side of the rotor.