Abstract: A caliper includes a hydraulic linking channel provided in a bridge section linking hydraulic cylinders, on an inner caliper section side, and hydraulic cylinders, on an outer caliper section side, to a cylinder-side hydraulic channel disposed on the back end of each respectively. A connecting channel forming section, which corresponds to each cylinder-side hydraulic channel and the hydraulic linking channel is provided, in advance, in a core used during casting of the inner caliper section, the outer caliper section, and the bridge section, and is formed by setting in a situation to be embedded at the same time as each caliper section and the bridge section are being integrally cast.

Abstract: A caliper comprises a hydraulic linking channel provided in a bridge section linking hydraulic cylinders, on an inner caliper section side, and hydraulic cylinders, on an outer caliper section side, to a cylinder-side hydraulic channel disposed on the back end of each respectively. A connecting channel forming section, which corresponds to each cylinder-side hydraulic channel and the hydraulic linking channel is provided, in advance, in a core used during casting of the inner caliper section, the outer caliper section, and the bridge section, and is formed by setting in a situation to be embedded at the same time as each caliper section and the bridge section are being integrally cast.

Abstract: A caliper comprises a hydraulic linking channel provided in a bridge section linking hydraulic cylinders, on an inner caliper section side, and hydraulic cylinders, on an outer caliper section side, to a cylinder-side hydraulic channel disposed on the back end of each respectively. A connecting channel forming section, which corresponds to each cylinder-side hydraulic channel and the hydraulic linking channel is provided, in advance, in a core used during casting of the inner caliper section, the outer caliper section, and the bridge section, and is formed by setting in a situation to be embedded at the same time as each caliper section and the bridge section are being integrally cast.

Abstract: A tire has a tread, wherein: provided that a position distanced from the tread center position A on each side in the tire width direction by ¼ of the entire peripheral length of the tread surface is position B, a length of a straight line lA between the center position A and the tire rotation axis P is LA, a length of a straight line between the position B and the tire rotation axis P is LB, an intersection of the straight line lA and a straight line drawn from the position B to the straight line lA is position C, and a length between the position B and the position C is X, (LA?LB)/X is in the range of 0.277 to 0.350; and the rubber composition of the tread has specific content ranges of a filler and a resin having softening point?145° C.

Abstract: A caliper comprises a hydraulic linking channel provided in a bridge section linking hydraulic cylinders, on an inner caliper section side, and hydraulic cylinders, on an outer caliper section side, to a cylinder-side hydraulic channel disposed on the back end of each respectively. A connecting channel forming section, which corresponds to each cylinder-side hydraulic channel and the hydraulic linking channel is provided, in advance, in a core used during casting of the inner caliper section, the outer caliper section, and the bridge section, and is formed by setting in a situation to be embedded at the same time as each caliper section and the bridge section are being integrally cast.