Abstract: Provided is a bumper capable of improving a maneuvering stability of a vehicle. The bumper is a front bumper 7 to be attached to a front lower portion of a vehicle 1. Flow-straightening protrusions 31 each formed along a vehicular front-rear direction are provided on a lower portion of the front bumper 7 in a way such that they are aligned along a vehicular width direction across a region on an extended line 36 of a vehicular width direction inner end portion 2T of each of front wheels 2L, 2R of the vehicle 1. Thus, the occurrence of turbulent flows around the front wheels 2L, 2R can be restricted so that a vehicle stability can be improved.

Abstract: Provided is a bumper capable of improving a maneuvering stability of a vehicle. The bumper is a front bumper 7 to be attached to a front lower portion of a vehicle 1. Flow-straightening protrusions 31 each formed along a vehicular front-rear direction are provided on a lower portion of the front bumper 7 in a way such that they are aligned along a vehicular width direction across a region on an extended line 36 of a vehicular width direction inner end portion 2T of each of front wheels 2L, 2R of the vehicle 1. Thus, the occurrence of turbulent flows around the front wheels 2L, 2R can be restricted so that a vehicle stability can be improved.

Abstract: An aerodynamic component disposed on a side face of an upper rear part of an automobile vehicle body and reduces a lift coefficient of a vehicle body rear part, includes a plate-shaped base part and a fin projectingly provided on a front face of the base part, wherein the base part gently increases in thickness from a front edge side to a rear edge side, and has at the rear edge a shape that rises steeply with respect to the side face of the upper rear part of the vehicle body.

Abstract: An aerodynamic component disposed on a side face of an upper rear part of an automobile vehicle body and reduces a lift coefficient of a vehicle body rear part, includes a plate-shaped base part and a fin projectingly provided on a front face of the base part, wherein the base part gently increases in thickness from a front edge side to a rear edge side, and has at the rear edge a shape that rises steeply with respect to the side face of the upper rear part of the vehicle body. Therefore, it is possible for the aerodynamic component to generate a turbulent vortex in the air flow passing the vehicle body upper rear part to thus decrease the lift coefficient of the vehicle body rear part and ensure the ground load for the rear wheel, thereby enabling the handling stability of the vehicle to be enhanced.