ALL Corollas are fitted with disc brakes and a single-piston floating calliper front and rear, the front (ventilated) discs measuring 255mm x 25mm and the (solid) rear discs 269mm x 9mm. Ultima has a four-channel, four-sensor ABS braking system with electronic brake-force distribution (EBD) and brake assist (BA). EBD varies the front to rear brake bias depending on vehicle load, while BA applies maximum pedal force when required to obtain the shortest possible braking distance.