ëï æä âí îä ùàðé îëéø.. äåà øùí àç"ë:
is not air bubble , is vapor bubble , if you don't change the brake fluid for some years some humidity can get into the fluid , if the caliper is poorly maintained there is some friction
between the rotor and the caliper , this generate heat , and the water turns to vapor locking the brake
á÷éöåø ëðøàä úéøåõ àå îùäå.