Motorcycle wheels come in different sizes, ranging from 12 inches to 21 inches in diameter. While most motorcycles can accommodate a few different wheel sizes, how small—or how big—the wheels are on your bike can impact your ride's performance and handling in both good and bad ways. In this guide, we'll go over the basics of motorcycle wheel sizing and how to choose the right size for your bike.
Understanding Motorcycle Wheel Sizes
Before we get into the specifics, you'll need to know a few key terms and concepts related to motorcycle wheel sizes.
The Width
The width of a motorcycle wheel is the distance between the inner and outer edges of the rim. This measurement is typically expressed in inches, with common sizes being 2.5”, 3.0”, and 3.5”. The wider the wheel, the more surface area it has to grip the road, which can provide increased stability and handling capabilities.
The Diameter
The diameter of a motorcycle wheel refers to its size from one side of the tire to the other, passing through the center hub. This measurement is also commonly expressed in inches, ranging from 12” to 21”. A larger diameter typically means higher top speeds, but can also affect handling depending on other factors such as weight distribution and tire width. So you have to consider how the diameter interacts with the other aspects of your bike as well.
Aspect Ratio
The aspect ratio of a motorcycle wheel is the relationship between its diameter and width. This is expressed as a percentage, with common ratios being 90%, 80%, and 70%. A higher aspect ratio means a taller tire, which can provide a smoother ride and better shock absorption. However, it may also decrease handling and stability.
Speed Rating
Motorcycle tires also have a speed rating, which indicates the maximum safe speed at which they can be ridden. This is typically represented by a letter code, with higher letters indicating higher speeds. For example, an "H" rating means the tire can handle speeds up to 130 mph, while a "V" rating means it can handle speeds up to 149 mph.
It's worth noting these ratings are for optimal conditions and may vary depending on factors such as load weight and road conditions. Riders should always follow the recommended speed limit for their tire rating.
Tire Construction
You can have either a belted or non-belted tire construction. Belted tires have a layer of rubber-coated steel belts underneath the tread, providing added strength and stability. Non-belted tires don’t have this additional layer.
Belted tires are typically more expensive but offer better handling and durability. Non-belted tires may be sufficient for everyday use, but they can wear down quicker and may not perform as well in harsh conditions.
What's Better: A Smaller or Bigger Wheel?
Before you go shopping for new wheels for your ride, think about whether you want to size up or down from what you’ve got now.
Smaller wheels typically offer better handling and performance, as there’s less distance between the tire tread and the wheel hub. This can result in sharper turns and a more responsive driving experience. However, smaller wheels may also have less stability and may not handle bumps or potholes as well.
Bigger wheels provide a larger contact patch with the road, which can improve traction and stability. They also tend to give vehicles a more aggressive appearance. However, they can be heavier and may decrease fuel efficiency due to an increased rolling resistance.
Ultimately, the choice between smaller or bigger wheels comes down to personal preference and the type of driving experience you want.
How To Determine What's Best for Your Motorcycle
Having trouble deciding what size wheels to get for your motorcycle? Here are some tips to help you determine which wheel size is the best fit for your bike.
Consider the Purpose of Your Motorcycle
The purpose of your motorcycle should greatly influence the type of wheels you choose. If you use your motorcycle primarily for commuting or long-distance touring, smaller wheels may be more practical and efficient. If you're into off-roading or aggressive riding, larger wheels with beefier tires may be a better choice.
Check Manufacturer Recommendations
Before making any modifications to your motorcycle's wheel size, consult the manufacturer's recommendations. They will have specific guidelines and limitations on what wheel sizes are safe and compatible with your bike's frame, suspension, and braking systems. Installing wheels that the manufacturer doesn’t recommend can be dangerous and may potentially void your warranty.
Consider Handling and Performance
One of the main reasons riders consider changing their motorcycle wheel size is for improved handling and performance. Smaller wheels tend to offer quicker steering response and better agility, while larger wheels provide more stability at higher speeds. What would you benefit more from?
Be Aware of Fitment Issues
When changing your wheel size, you need to be aware of fitment issues. This is especially true when making the switch from small to large wheels. Check with your manufacturer or a reputable mechanic to ensure the new wheels will properly fit on your motorcycle without any clearance or rubbing issues.
Consider Aesthetics
While performance is important, the overall look and style of your motorcycle is also something to consider when choosing wheel size. Smaller wheels can make a bike look sportier and more agile, while larger wheels give off a more powerful and stable appearance.
Understand Cost and Maintenance Factors
Changing wheel sizes can come with additional costs, such as new tires and potentially even custom parts or modifications. You should factor in these costs when deciding on a wheel size for your motorcycle.
In terms of maintenance, smaller wheels may require more frequent tire changes as they have less surface area and can wear down faster. Larger wheels are hardier thanks to the larger contact patch, but they may need additional care when it comes to cleaning and detailing.
Considering all of these factors can help you narrow down your options and choose the wheel size that best fits your budget, driving style, and ability to maintain them.
Once you have a size in mind, head on over to DNA Specialty to pick up your new wheels. We have stylish billet wheels with intricate designs and colors, and so much more! We'll have you hitting the road with more power, flair, and swagger in no time, thanks to our extensive selection and lightning-fast shipping!
