Motorcycle license plates come in standard sizes that vary by region. In the United States, most states require a motorcycle plate that is around 6 inches high by 12 inches wide. The exact dimensions can differ slightly, but this elongated rectangular shape is the most common.
Size Of Motorcycle License Plate requirements have changed over time along with motorcycle styles and regulations. Many early 20th century motorcycles used smaller plates closer to the size of a standard automobile plate. As motorcycle laws were updated in subsequent decades, larger plates became the norm to improve visibility and compliance.
While cars and trucks use larger license plates, the slim profile of most motorcycles necessitates a more compact rectangular size. But within those constraints, motorcycle plates must still meet reflectivity, durability and legibility standards. Some custom license plate designs are permitted, but the base size tends to follow a standard motorcycle plate format of about 6 by 12 inches.
What are the standard dimensions for motorcycle license plates?
The standard motorcycle license plate dimensions in the United States are typically around 7 inches (18 cm) in width by 4 inches (10 cm) in height. These compact plates are designed to fit on motorcycles and mopeds. However, the exact dimensions can vary slightly by state, such as Minnesota using a plate that is 7-3/16 by 4-3/16 inches.
What is the typical width and height for a motorcycle license plate?
A typical motorcycle license plate in the US measures 7 inches wide by 4 inches tall. This allows the plate to fit compactly on the motorcycle without obstructing critical components. The majority of states use plates with these dimensions.
How does motorcycle license plate size compare to car license plates?
Motorcycle license plates are much smaller than car license plates. While motorcycle plates are typically 7 by 4 inches, standard car license plates measure 12 by 6 inches – nearly double the size. The smaller motorcycle plates are designed to fit appropriately on two-wheeled vehicles.
Are there regulations defining motorcycle license plate dimensions?
Yes, regulations and codes define the specific required motorcycle license plate dimensions on a state-by-state basis. For example, Ohio administrative code 4501-27-01 states motorcycle plates must be 7 inches wide. So legally required dimensions are codified into state vehicle regulations.
Can I get a custom sized motorcycle license plate?
It depends on the state, but custom motorcycle license plates are typically not allowed if they do not meet legal size requirements. Size Is A Motorcycle License Plate Some specialty plates may be slightly smaller, such as vintage porcelain plates. But in general, motorcycle license plate dimensions are standardized and must comply with state vehicle codes.
How do I determine the correct size license plate for my motorcycle?
The size of a motorcycle license plate is determined by state regulations. Most states use a standard 4″ x 7″ license plate for motorcycles, but there are some variations. To determine the correct size, check your state’s Department of Motor Vehicles (DMV) website which should list the specifications.
You can also measure your current plate if replacing it. Some motorcycles may have non-standard mounting areas, in which case you’d need a custom plate or adapter bracket.
What information do I need to select the right motorcycle license plate size?
The key information needed is your state and motorcycle make/model. Check your state’s DMV website for license plate dimensions – this will list the standard size used. For the motorcycle specifics, owners manuals and parts diagrams typically show license plate mounting locations and sizes.
You’ll want to match the state’s standard plate size to your bike’s mounting area. Having the year, make and model can help locate diagrams and compatibility details if needed.
Where can I find the recommended license plate size for my specific motorcycle make and model?
The vehicle owner’s manual is the best place to find license plate size recommendations and mounting details for your specific motorcycle. Parts diagrams from the manufacturer can also show mounting locations with dimensions.
If unavailable, check enthusiast forums related to your motorcycle, as those can provide model-specific guidance. Local dealerships may also have resources showing proper license plate sizing. As a fallback, your state’s standard motorcycle plate size should still work, likely with some custom mounting.
What if my motorcycle does not have a standard place to mount the license plate?
If there is no standard license plate mounting location, you have a few options. Aftermarket license plate brackets can adapt the state’s standard plate size to custom locations on the motorcycle. Some manufacturers make model-specific brackets for unusual bike designs.
Custom fabricated and adjustable license plate mounts are another option. If needed due to limited space, smaller vanity plates may be allowed, but verify regulations for minimum size. Proper visibility and illumination must still be maintained regardless of mounting method.
What options do I have if my motorcycle has an unusual shape or design?
For motorcycles with unusual frame shapes or bodywork without standard mounting areas, custom license plate brackets or mounts will likely be needed. These can attach plates to various locations while adhering to size regulations. Smaller vanity plates may be an option depending on state minimums.
Some manufacturers make model-specific brackets for bikes with limited mounting space or non-standard design elements. Owners can also fabricate custom mounts and brackets matched to the motorcycle’s specifics. Regardless of mounting style, proper plate visibility and lighting must be maintained.
What factors impact readability of motorcycle license plates?
The key factors affecting motorcycle license plate readability include plate size and dimensions, font size and design, materials used, reflectivity, contrast ratio, and traveling speed of the motorcycle relative to the viewer. Thinner plate materials, smaller text, reflective coatings, special characters, and faster traveling speeds all negatively impact readability.
How does license plate size affect the readability by license plate recognition systems?
Smaller motorcycle license plates around 7 x 4 inches are more difficult for license plate recognition systems to accurately read compared to standard 12 x 6 inch plates. The smaller surface area provides less pixel information for the software to analyze and interpret. This effect worsens with faster traveling speeds.
What aspects make a license plate easier or harder for humans to read?
For human readability, larger text, high contrast colors and backgrounds, non-reflective coatings, consistent simple fonts and syntax without special characters all help humans quickly and accurately identify license plate numbers. Reflectivity helps for nighttime visibility.
How far away should motorcycle license plates be legible from?
Motorcycle license plates in some states like Texas must meet minimum reflectivity and contrast requirements to ensure they are readable by humans from at least 75 feet away when using low beam headlights at night.
Can I increase readability by using a larger motorcycle license plate?
Yes, within legal size limits, using a larger motorcycle license plate with maximum allowable height and dimensions will increase overall readability and identification accuracy for both license plate recognition systems and the human eye.
Where should I mount the motorcycle license plate?
Most states require motorcycle license plates to be securely fastened to the rear of the motorcycle in a place and position that is clearly visible. Common mounting locations are under the rear fender, on top of the rear fender, or attached to the swing arm. Check your state’s vehicle or traffic codes for specifics.
What is the recommended placement for motorcycle license plates?
The recommended placement is to securely fasten the license plate to the rear of the motorcycle, oriented horizontally, with nothing covering or obstructing it. Position it so it is clearly visible and meets the visibility and readability requirements for your state. Some states specify a minimum height from the ground.
Are there any regulations dictating license plate mounting locations?
Yes, states have regulations regarding proper license plate mounting. Most require it to be securely fastened on the rear of the motorcycle in a horizontal orientation without obstruction. Some states dictate specific mounting heights from the ground or angles. Check your local traffic codes and motorcycle license plate laws.
How can I ensure my license plate is visible and legal?
To ensure your license plate meets legal visibility standards, check your state’s traffic regulations. Fasten it securely to the rear oriented horizontally without obstruction. Position it at the specified height with the required spacing, angled properly so it can be read from the required distance behind the motorcycle. Keep it clean and replace when faded.
What kind of motorcycle license plate bracket or holder should I use?
When choosing a motorcycle license plate bracket, opt for a sturdy metal holder made of steel, aluminum, or chrome. Look for corrosion resistant materials that won’t rust. The bracket should have pre-drilled holes for easy screwing or bolting of the license plate.
Consider an adjustable license plate bracket if you want flexibility in positioning the plate on your motorcycle frame or fender. Adjustable brackets allow you to mount the plate at different angles.
Here is a table summarizing good motorcycle license plate bracket options:
| Bracket Type | Benefits |
| Chrome metal | Durable, won’t rust |
| Aluminum | Lightweight |
| Steel | Sturdy and strong |
| Adjustable | Flexible positioning |
Make sure to use weather and rust resistant mounting hardware for a secure install. The license plate should lie flat and horizontal to meet legal visibility requirements.
How do I install a license plate on my motorcycle?
Most motorcycle license plates are around 4 by 7 inches in size. To install, you’ll need the license plate itself along with screws or bolts and washers to mount it. The license plate should have pre-drilled holes that align with holes or threaded inserts on a bracket or frame part behind the rear wheel. Use the appropriate hardware to attach the plate securely so it does not bend or fall off. Some people also add a license plate frame for decoration.
What tools, hardware, and materials do I need to install the license plate?
You’ll need the license plate, screws or bolts, washers, a screwdriver, and possibly threadlocker fluid or loctite if the mounting holes are pre-threaded. Stainless steel or zinc plated hardware is best to avoid rust. The size and type of hardware depends on your motorcycle’s mounting bracket. M6 x 12mm screws are commonly used.
Make sure the screws are long enough to fit through the plate and bracket but not so long they extend too far inside the motorcycle frame. Washers distribute load so the plate lies flat.
What is the step-by-step process to properly mount the plate?
The process is:
- Locate the rear mounting bracket, usually behind the rear wheel
- Line up the license plate holes with the bracket holes
- Insert bolts through the plate holes and bracket, using washers
- Tighten bolts securely using screwdriver or wrench
- Check that the plate lies flat and tight to the bracket
- Make sure plate is properly oriented right-side up and letters/numbers are clearly visible
Some people also add threadlocker to the bolts or use security screws. Avoid overtightening.
How can I check that the license plate meets legal requirements?
Check your state’s DMV website for specifics on size, visibility, and other requirements3. Common things to validate are:
- Plate lies flat and horizontal
- Letters and numbers are upright (not sideways)
- Plate is clearly visible from the rear
- Nothing blocks or obscures the plate
- Meets minimum size and dimensions for your state
Test visibility by having someone stand behind your motorcycle to confirm the plate is easy to see and read.
What mistakes should I avoid when installing the motorcycle license plate?
Avoid these common mistakes:
- Plate is mounted loosely or crooked
- Plate bends due to overtightening screws
- Bolts used are too long and extend inside frame
- Plate or bolts interfere with moving parts
- Plate is mounted too high or low to meet regulations
- Letters and numbers end up sideways or upside down
Following the proper mounting process and checking legal requirements will prevent issues. Test visibility from behind the motorcycle before riding.
Frequently Asked Question
What are the typical dimensions for motorcycle plates?
Most states use 4 inches by 7 inches motorcycle license plates.
How does motorcycle plate size differ from car plates?
Motorcycle plates are smaller at around 4 by 7 inches, while car plates are larger at 6 by 12 inches.
Do all states use the same motorcycle plate measurements?
No, a few states like Maryland and Minnesota have slightly different standard motorcycle plate dimensions.
Can I get a custom motorcycle plate size?
Possibly, but custom plates still need to meet minimum size requirements for mounting and visibility.
Are there regulations for motorcycle license plate sizes?
Yes, most jurisdictions regulate acceptable motorcycle plate dimensions, materials, mounting, visibility and readability.
Conclusion
The standard motorcycle license plate size in most states is 4 inches tall by 7 inches wide. This is smaller than the typical car license plate. Some jurisdictions may have slight variations in sizing. For example, California plates issued prior to 1970 are 8 by 5 inches. But today’s common dimensions are 4 by 7 inches.
When purchasing a license plate holder or frame, allow a bit of extra room for adjusting the fit. Standard accessories meant for motorcycles are often made to accommodate sizes around 4 1⁄4 by 7 1⁄2 inches.
So while the plates themselves should be 4 by 7 inches, going slightly larger on the frame still works for most bikes. Knowing the precise motorcycle license plate measurements for your state helps ensure proper mounting during installation.
