Vehicle differential device and vehicle

A vehicle differential device to be mounted on a vehicle, the vehicle differential device comprising:

• a differential case that is rotated by receiving a driving force of a drive source;
• a pair of side gears that are disposed in the differential case and coaxial with a rotation axis of the differential case;
• a pinion gear that is disposed in the differential case and meshes with both of the pair of side gears;
• and
• a differential limiting mechanism that generates a differential limiting torque for limiting differential motion of wheels of the vehicle, wherein
• the differential limiting mechanism has a plurality of friction plates that are pressed by each side gear in an axial direction in which the rotation axis extends,
• the plurality of friction plates include:
• a plurality of case-side friction plates provided in the differential case;
• and
• a plurality of gear-side friction plates provided in the side gear,
• the case-side friction plates and the gear-side friction plates are arranged side by side in the axial direction and slide relative to each other to generate the differential limiting torque,
• the case-side friction plates include a first case-side friction plate and a second case-side friction plate,
• the gear-side friction plates include a first gear-side friction plate and a second gear-side friction plate, and
• a first sliding diameter between the first case-side friction plate and the first gear-side friction plate and a second sliding diameter between the second case-side friction plate and the second gear-side friction plate are different from each other.