The tire on a bicycle
A folding metal tray
The wheel of a bike
A fold-up seat folded up.
A front rack on the bike.
A bike front tire.
silver spokes of bicycle wheel
brown tire of bicycle
white stripe on tire
sunlight coming through window
a bike inside a bus
back wheel of bike 
spokes of a wheel
tire of back is color brown
spokes are metal
a bike parked on a train and near a wall with windows