Optima V6-2.7L (2003)
2. Free play of brake pedal.
Free play of brake pedal: 3 - 8 mm (0.12 - 0.32 inch)
3. Start the engine, apply the brake pedal with approximately 500 N (50 kg, 110 lbs.) of force, and measure the clearance between the brake pedal
and the floor board.
Pedal to floor board clearance "C"
when pedal is depressed 50 kg (110 lb.) force: 75 mm (2.95 inch) or more
when pedal is fully depressed without brake fluid: 35 mm (1.378 inch) or more