A suspension system comprising: a suspension member; an end plate, made of metal and attached to the suspension member; and a wheel side member attached to the end plate, the end plate comprising: an outer wall portion to which the wheel-side member is attached; an inner wall portion facing the outer wall portion; a side peripheral-wall portion connecting a peripheral end of the outer wall portion and a peripheral end of the inner wall portion with each other; a through hole causing a central part of the outer wall portion and a central part of the inner wall portion to communicate with each other, into which an intruding portion provided in the wheel-side member intrudes; characterized in that the end plate furthermore comprises: a first press-formed portion extending along a peripheral edge of the through hole in the inner wall portion and formed with a recessed portion in which the peripheral edge is depressed; a second press-formed portion arranged in a part of a peripheral edge on a side of the peripheral end of the inner wall portion, which is a remnant of a portion where the first press-formed portion is arranged in the inner wall portion, with a protruding portion formed therein and in which a part of the peripheral edge is protruded; and a screw hole penetrating through the protruding portion in the second press-formed portion causing the outer wall portion and the inner wall portion to communicate with each other, wherein the inner wall portion is arranged inside the suspension member. a suspension member; an end plate, made of metal and attached to the suspension member; and a wheel side member attached to the end plate, the end plate comprising: an outer wall portion to which the wheel-side member is attached; an inner wall portion facing the outer wall portion; a side peripheral-wall portion connecting a peripheral end of the outer wall portion and a peripheral end of the inner wall portion with each other; a through hole causing a central part of the outer wall portion and a central part of the inner wall portion to communicate with each other, into which an intruding portion provided in the wheel-side member intrudes; characterized in that the end plate furthermore comprises: a first press-formed portion extending along a peripheral edge of the through hole in the inner wall portion and formed with a recessed portion in which the peripheral edge is depressed; a second press-formed portion arranged in a part of a peripheral edge on a side of the peripheral end of the inner wall portion, which is a remnant of a portion where the first press-formed portion is arranged in the inner wall portion, with a protruding portion formed therein and in which a part of the peripheral edge is protruded; and a screw hole penetrating through the protruding portion in the second press-formed portion causing the outer wall portion and the inner wall portion to communicate with each other, wherein the inner wall portion is arranged inside the suspension member. an outer wall portion to which the wheel-side member is attached; an inner wall portion facing the outer wall portion; a side peripheral-wall portion connecting a peripheral end of the outer wall portion and a peripheral end of the inner wall portion with each other; a through hole causing a central part of the outer wall portion and a central part of the inner wall portion to communicate with each other, into which an intruding portion provided in the wheel-side member intrudes; characterized in that the end plate furthermore comprises: a first press-formed portion extending along a peripheral edge of the through hole in the inner wall portion and formed with a recessed portion in which the peripheral edge is depressed; a second press-formed portion arranged in a part of a peripheral edge on a side of the peripheral end of the inner wall portion, which is a remnant of a portion where the first press-formed portion is arranged in the inner wall portion, with a protruding portion formed therein and in which a part of the peripheral edge is protruded; and a screw hole penetrating through the protruding portion in the second press-formed portion causing the outer wall portion and the inner wall portion to communicate with each other, wherein the inner wall portion is arranged inside the suspension member. a first press-formed portion extending along a peripheral edge of the through hole in the inner wall portion and formed with a recessed portion in which the peripheral edge is depressed; a second press-formed portion arranged in a part of a peripheral edge on a side of the peripheral end of the inner wall portion, which is a remnant of a portion where the first press-formed portion is arranged in the inner wall portion, with a protruding portion formed therein and in which a part of the peripheral edge is protruded; and a screw hole penetrating through the protruding portion in the second press-formed portion causing the outer wall portion and the inner wall portion to communicate with each other, wherein the inner wall portion is arranged inside the suspension member.