(Bike tires) A bicycle wheel is a wheel, most commonly a wire wheel, designed for bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels.
bike * no tires
On my drive to work in the mornings, this sea green bike would be locked to this pole at least twice a week. Well, this time, both tires were gone, the frame still there. It hasn't been removed since.
Bike tire cross section
You can see just how worn the middle of the tread is. This doesn't show it but there were patches of the tire that were worn all the way through, leaving just the kevlar showing underneath.