Chevrolet 2010 Corvette Convertible Owner's Manual page 127

Up-shifts to 4 (Fourth) gear require approximately
35 km/h (22 mph).
Up-shifts to 5 (Fifth) gear require approximately
45 km/h (28 mph).
Up-shifts to 6 (Sixth) gear require approximately
65 km/h (41 mph).
To prevent damage to the powertrain, Manual Paddle
downshifts to a lower gear cannot be done above
certain speeds. The maximum speed allowed for
downshifting of gears 1 (First) through 4 (Fourth) are:
Into 4 (Fourth) gear over 250 km/h (155 mph)
Into 3 (Third) gear over 188 km/h (117 mph)
Into 2 (Second) gear over 120 km/h (75 mph)
Into 1 (First) gear over 68 km/h (42 mph).
Up-shifts to 4 (Fourth) gear require approximately
31 km/h (19 mph).
Up-shifts to 5 (Fifth) gear require approximately
39 km/h (24 mph).
Up-shifts to 6 (Sixth) gear require approximately
57 km/h (35 mph).
To prevent damage to the powertrain, Manual Paddle
downshifts to a lower gear cannot be done above
certain speeds. The maximum speed allowed for
downshifting of gears 1 (First) through 4 (Fourth) are:
Into 4 (Fourth) gear over 234 km/h (145 mph)
Into 3 (Third) gear over 176 km/h (109 mph)
Into 2 (Second) gear over 113 km/h (70 mph)
Into 1 (First) gear over 64 km/h (40 mph).
If the driver does not request an upshift as the engine
speed approaches fuel shut off RPM, the engine speed
will be limited to protect the engine. See
for more information.
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