VEHICLE BRAKE SYSTEM AND METHOD OF DETECTING WEAR OF FRICTION MEMBER

A vehicle brake system, including: an electric brake device including a friction member, a rotor, a motor, and a driven member; and a wear detector including a data obtaining section to obtain a forward movement amount of the driven member and a pressing force by which the driven member presses the friction member, a detecting section to detect a contact start position of the driven member, and an estimating section to estimate a remaining thickness of the friction member, wherein the wear detector includes an uneven-wear detecting section to detect uneven wear of the friction member, by comparing: a relationship between the forward movement amount and the pressing force; and a relationship therebetween in a case where it is supposed that a thickness of the friction member is equal to the remaining thickness that would be estimated in a state in which the friction member is evenly worn.