A steering suspension of a vehicle includes a suspension upright and a mechanical component consisting of a radially outer ring of a wheel hub unit or of a rolling bearing forming part of a wheel hub unit. The outer ring is provided integral in one piece with a flange and a steering arm, extending radially cantilevered from the outer ring and the flange, with which it is also integral in one piece. On the side opposite to the steering arm the flange is integral in one piece with a pair of axially drilled radial lugs, configured to support, in use, a brake caliper.