SUPPORT STRUCTURE FOR VEHICLE

A support structure for a vehicle includes: a body portion (); a damper attachment portion (); a tie-rod attachment portion (); and a lower arm attachment portion (). The vehicle supporting structure () has a first rib () that connects the damper attachment portion () with the tie-rod attachment portion (), a second rib () that connects the tie-rod attachment portion () and the lower arm attachment portion (), and a third rib () that connects the first rib with the second rib. The first rib is inclined to have a height that gradually decreases from the damper attachment portion toward the tie-rod attachment portion, forming a first inclined portion () and a first thinned portion (). The third rib is inclined to have a height that gradually decreases from the second rib toward the first rib, forming a second inclined portion () and a second thinned portion ().