Parts of Wheel and Their Function: A Complete Guide

Despite their indisputable importance, how many people can correctly name all parts of wheel? Let’s be honest. Too often we have seen a rim advertised as a wheel and vice versa.

A defunct wheel means a defunct automobile and nothing enhances the aesthetic appeal of a vehicle more than a good-looking set of wheels.

part of wheel

Since wheels are that important, it’s time that we learn about all the parts for wheel

Different Parts of  Rim and Their Functions

A wheel is composed of many parts such as tire, rim, hub, and valve system. These components then further consist of numerous parts.


Tire is the outermost part that keeps you safe and comfortable whilst driving. A tire performs multiple functions. It surrounds the rim and prevents the rim from coming into contact with the ground. It also supports the weight of a vehicle and absorbs shock from rough terrains such as potholes or uneven roads. Additionally, tire also transfers braking or acceleration force to the ground.


Rim and wheel are often used interchangeably but they’re not one and the same. Rim is one of the parts which connects the tire to the wheel and holds it firm in its place. It also allows the air to fill in the tire. Rims are made from various materials; steel rims as well as aluminum rims are available in the market. Rims come in a variety of designs and colors making them very popular in the aftermarket wheels industry.

Wheel Hub

Wheel hub is the most important part. It is at the center of wheel and the rim is attached to it. Wheel mounts on the wheel hub and wheel hub assembly is responsible for keeping it attached to the vehicle. It is also responsible for the motion of wheel i.e. it allows you to steer.

Valve Stem 

Valve stem is a basic component of wheel that allows you to inflate or deflate the tire. A tire pressure monitoring system is present in the valve stem that keeps the driver informed about the air pressure of tire at all times. Valve stems are made from different materials. They are also customized and manufactured in various designs for cosmetic purposes.Wheelshome offers high quality of TPMS which are very popular in the market for 99% of the cars.Only Alloy valves are offered with high quality to our customers both car owners and wholesalers.

Drop Center 

As the name sounds, drop center refers to the deep well at the center point of a wheel. It allows for the convenient installation and removal of the tire from wheel. It also keeps the tire attached to the wheel in case of low tire pressure. Moreover, drop center is beneficial for drivers as it allows them to control the directions of a vehicle.

Center Cap

Center cap also called hub cap. It does not affect the functioning of a wheel and you can drive a vehicle without center cap without facing any difficulty. However, this small disk at the center, mostly featuring an emblem, plays an important role. It protects the spindle nut and wheel bearings from dirt and also significantly improves the overall look of a wheel.Wheelshome offers custom center cap for our customers.Every forged order or production order we can offer custom caps so you have your own brands.And we will offer best designs for your caps so they will be popular in the market.


Spokes are rods that connect the rim to the center of wheel. In the alloy rims, spokes are given special attention as they are the most eye-catching part. Their number as well as design varies in different wheels; some wheels feature spokes as low as 3, while others may have as many as 10 or more.Now more and more designs are making slim spokes with superlight weight so car will be much more powerful.But some heavy cars like SUV need strong enough spokes and good quantity spokes so they can carry the heavy cars.If you are tired of looking for alloy wheels with nice spokes,pls contact wheelshome and we give you the best solution.

Final Word

A wheel has many more parts other than the ones listed in this guide. However, one thing is certain that a wheel is not a single unit rather it is made up of numerous parts which are assembled together. All these parts play a significant role in rim and quality of these components essentially determines the quality of your wheels and ride.

If you are looking to update your vehicle with an eye-catching set of high performance alloy wheels, get in touch with us to get the best deals!

All Wheelshome Forged wheels are Made in China
Lifetime Limited Structural Warranty and 2 Year Finish Warranty
SUV load-rated versions will use the forged wheels in 20″-24″ diameters.
Aerospace-grade 6061-T6 forged aluminum for high strength-to-weight ratio
Available in Visible or Hidden assembly bolts
Engineered to minimize unsprung mass and rotational inertia for maximum performance and handling
CNC machined to custom specifications for your specific application
OE TPMS and lug hardware compatible for ease of installation
Center lock options available
Titanium Hardware Optional

Update cookies preferences
Scroll to Top
× How can I help you?