
Structure of automobile wheels
Offset: The distance between the center surface of the rim and the spoke mounting surface. There are positive, zero and negative offsets.
Rim: the part of the wheel that fits over the tire and supports the tire.
Spoke: the part of the wheel that is mounted on the wheel and attached to the axle to support the rim.
Offset: The distance between the center surface of the rim and the spoke mounting surface. There are positive, zero and negative offsets.
Rim:The part of the rim that maintains and supports the direction of the tire.
Bead Seat:The part of the rim that contacts the tire bead and supports the radial direction of the tire.
Bottom:A pit of a certain depth and width left in the rim to facilitate the removal of the tire.
Valve:The hole where the tire valve is mounted.