As an expert in the field of automotive engineering, I can provide you with a comprehensive explanation of the differences between a tire and a wheel.

A Wheel:
A wheel is a fundamental component of a vehicle's suspension system. It is designed to support the weight of the vehicle and facilitate movement. Wheels come in various shapes and sizes, but the most common type is the circular wheel. A wheel typically consists of several parts:


1. Hub: This is the central part of the wheel that holds the axle, which in turn connects to the vehicle's suspension system. The hub is usually made of metal and is designed to be strong and durable.


2. Rim: The rim is the outer circular part of the wheel that provides a mounting surface for the tire. It can be made from various materials, including steel, alloy, and carbon fiber. The rim's main function is to support the tire and keep it in place.


3. Spoke: Spokes are the metal bars that connect the hub to the rim. They provide structural support to the wheel and help distribute the weight and forces acting on the wheel.

A Tire:
A tire, on the other hand, is a flexible, rubbery covering that is mounted on the wheel. Its primary function is to provide traction and cushion the ride by absorbing shocks and vibrations from the road. Tires are made from a combination of materials including rubber, fabric, and steel, and they have several key components:


1. Tread: The tread is the outer surface of the tire that comes into contact with the road. It is designed with grooves and patterns to improve grip and prevent slipping.


2. Sidewall: The sidewall is the part of the tire that connects the tread to the bead. It is made of rubber and is designed to be flexible, allowing the tire to conform to the shape of the road and absorb shocks.


3. Bead: The bead is the innermost layer of the tire that is wrapped around the rim of the wheel. It is made of strong materials to ensure a tight and secure fit between the tire and the wheel.

Key Differences:


1. Material: Wheels are typically made from metal or alloy, while tires are made from a combination of rubber and other materials.


2. Function: Wheels support the vehicle and provide a mounting surface for the tires, whereas tires provide traction and absorb shocks from the road.


3. Shape: Wheels are generally circular with a central hub and a rim, while tires are flexible and conform to the shape of the wheel.


4. Necessity: All wheels can be considered complete without a tire, but a tire cannot function without a wheel to mount it on.


5. Usage: Wheels can be used in various applications, not just for vehicles. For example, wheels are used in machinery, bicycles, and even in furniture. Tires, however, are specifically designed for use with wheels in a vehicular context.


6. Maintenance: Wheels generally require less maintenance than tires. Tires, due to their exposure to various road conditions, need regular checks for wear, pressure, and alignment.

In conclusion, while a wheel and a tire are closely related and work together to provide mobility and comfort, they are distinct components with unique characteristics and functions. Understanding the differences between them is crucial for proper vehicle maintenance and performance.

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Generally speaking, a wheel is a round object with a hub and an axle. A tire is the rubber part of a wheel that grips the road. Not all wheels have tires. ... An old covered wagon wheel would not have a tire, either, but the covered wagon would still have four wheels.read more >>