Motorcycle tire size consists of width, aspect ratio, and rim diameter. For example, 120/70-17 means a tire 120mm wide, with a sidewall height 70% of its width, for a 17-inch rim. Radial or bias-ply construction affects tire performance. Load index and speed rating indicate capacity and speed capability. Choose tires based on your bike’s specs and intended use.
Tyre Size Calculator Motorcycle
New Tire Diameter (in inches): —
| Term | Meaning/Description |
|---|---|
| Tire Size | Represents the dimensions of the motorcycle tire. |
| Aspect Ratio | Indicates the height of the tire’s sidewall as a percentage of its width. |
| Rim Diameter | Specifies the diameter of the wheel rim in inches. |
| Width | Shows the tire’s width in millimeters. |
| Radial or Bias-Ply | Indicates the tire’s construction type. Radial tires have layers running radially, while bias-ply tires have diagonal layers. |
| Load Index | Represents the tire’s maximum load-carrying capacity. |
| Speed Rating | Indicates the maximum speed at which the tire is rated for sustained travel. |
| Front or Rear | Specifies whether the tire is designed for the front or rear wheel. |
| Common Equivalent Size | Provides an equivalent tire size that may be used interchangeably. |
| Purpose | Describes the general usage or purpose of the tire (e.g., sport, touring, off-road). |
FAQs
How do I know what size motorcycle tyres to get? To determine the right tire size for your motorcycle, you should refer to your motorcycle’s owner’s manual or the information typically found on the bike’s tire sidewall. It’s crucial to match the recommended tire size, which can vary by make and model.
Is 90 90 18 the same as 3.00 18? Yes, they are roughly equivalent. A 90/90-18 and a 3.00-18 tire have similar dimensions and can often be used interchangeably for many motorcycles.
What size tire will fit my motorcycle rim? The size of the tire that will fit your motorcycle rim depends on your motorcycle’s specifications. Refer to the owner’s manual or consult with a professional mechanic to ensure you choose the correct tire size.
Can I put a different size tire on my motorcycle? You can sometimes put a slightly different size tire on your motorcycle, but it’s essential to stay within the manufacturer’s recommended tire size range. Going too far outside these specifications can affect handling and safety.
What is the most common motorcycle tire size? One of the most common motorcycle tire sizes is 120/70-17 for the front and 180/55-17 for the rear, especially on sport and sport-touring motorcycles.
What is the most common motorcycle TYRE size? The most common motorcycle tyre sizes are often similar to the common tire sizes mentioned earlier, depending on the region and the type of motorcycle.
Is 80 100 18 and 2.75 18 the same? They are not the same. While both are 18-inch tires, 80/100-18 and 2.75-18 have different width and aspect ratio characteristics. The first number represents the width-to-height ratio, and the second number is the rim diameter. These differences can impact handling.
What does 90 90 18 mean? In the tire size 90/90-18, the first number (90) represents the tire’s width in millimeters, and the second number (90) represents the aspect ratio, which is the height of the tire’s sidewall as a percentage of its width. The third number (18) indicates the rim diameter in inches.
Is 90 90 19 and 3.25 19 same? No, they are not the same. 90/90-19 and 3.25-19 have different width and aspect ratio characteristics. The first number represents the width, and the second number represents the aspect ratio. These differences can affect handling and compatibility.
How does tire size affect motorcycle handling? Tire size can significantly impact handling. A wider tire may provide more stability but can make steering heavier, while a narrower tire may offer quicker steering but potentially reduced stability. The aspect ratio also affects ride comfort and how the tire absorbs road irregularities.
Can I put a wider tire on my motorcycle rim? You can often put a slightly wider tire on your motorcycle rim if it’s within the manufacturer’s recommendations and the wheel can accommodate it. However, going too wide can affect handling and safety.
Are wider tires better on a motorcycle? Wider tires can provide more stability in certain situations, but they can also affect agility and handling. The choice between wider or narrower tires depends on your riding style and the motorcycle’s design.
Should you always replace both tires on a motorcycle? It’s recommended to replace both tires at the same time to maintain balanced handling and grip. Mixing new and worn tires can lead to unpredictable handling.
Is it OK to run 2 different tires on a motorcycle? It’s generally not recommended to run two different tire brands or models on a motorcycle. Mixing tires with different tread patterns and compounds can affect handling and stability.
Can you plug a motorcycle tire twice? It’s not recommended to plug a motorcycle tire more than once, as the integrity of the tire can be compromised. Patching may be a better option for a second repair if it’s allowed by tire and safety regulations.
What does B mean on motorcycle tires? The “B” on motorcycle tires indicates the tire’s bias-ply construction, where the layers of fabric run diagonally across the tire. It’s less common today, with radial-ply tires being more prevalent.
What does MT stand for on a motorcycle tire? “MT” stands for “Metzeler Tire,” indicating that the tire is manufactured by the Metzeler brand.
Why are motorcycle front tires bigger? Front tires on motorcycles are often larger to provide better stability and traction when braking. The larger contact patch helps distribute braking forces more effectively.
What does 80 90 17 mean? In the tire size 80/90-17, the first number (80) represents the tire’s width in millimeters, and the second number (90) represents the aspect ratio, which is the height of the tire’s sidewall as a percentage of its width. The third number (17) indicates the rim diameter in inches.
What does 120 70 17 mean? In the tire size 120/70-17, the first number (120) represents the tire’s width in millimeters, the second number (70) represents the aspect ratio, and the third number (17) indicates the rim diameter in inches.
What does 150 60 R17 mean? In the tire size 150/60 R17, the first number (150) represents the tire’s width in millimeters, the second number (60) represents the aspect ratio, and the “R” indicates that it’s a radial tire. The third number (17) indicates the rim diameter in inches.
What does 120 80 18 mean on a tire? In the tire size 120/80-18, the first number (120) represents the tire’s width in millimeters, the second number (80) represents the aspect ratio, and the third number (18) indicates the rim diameter in inches.
What size is a 90 80 17 tire? A 90/80-17 tire typically has a width of 90 millimeters, an aspect ratio of 80%, and fits on a 17-inch rim.
Which tire size is better 18 or 19? The choice between an 18-inch and 19-inch tire depends on your motorcycle’s design and your riding preferences. A 19-inch tire may offer better off-road performance, while an 18-inch tire can provide a smoother ride on the road.
What does 110 90 18 mean? In the tire size 110/90-18, the first number (110) represents the tire’s width in millimeters, the second number (90) represents the aspect ratio, and the third number (18) indicates the rim diameter in inches.
What does 90 90 17 mean? In the tire size 90/90-17, the first number (90) represents the tire’s width in millimeters, the second number (90) represents the aspect ratio, and the third number (17) indicates the rim diameter in inches.
What does 100 90 r19 mean? In the tire size 100/90 R19, the first number (100) represents the tire’s width in millimeters, the second number (90) represents the aspect ratio, and the “R” indicates that it’s a radial tire. The third number (19) indicates the rim diameter in inches.
Is 3.00 12 the same as 80 100 12? Yes, 3.00-12 and 80/100-12 are roughly equivalent tire sizes, both fitting a 12-inch rim.
What is the alternative to 110 80 17? An alternative tire size to 110/80-17 might be 120/70-17 or 120/60-17, but it’s essential to consult your motorcycle’s specifications to ensure compatibility.
What is a 4.60 18 equivalent to? A 4.60-18 tire is roughly equivalent to a 110/90-18 tire, both fitting an 18-inch rim.
How far can you lean a motorcycle over? The maximum lean angle a motorcycle can achieve depends on its design and tire grip. Sport bikes can often lean over 45 degrees or more, while cruiser-style motorcycles typically have less lean angle.
Should motorcycle tires be at max psi? Motorcycle tires should be inflated to the recommended psi (pounds per square inch) specified by the manufacturer, not the maximum psi listed on the tire sidewall. The recommended psi can vary by motorcycle model and tire type.
How often should you change tires on a motorcycle? The lifespan of motorcycle tires varies depending on factors like riding style, road conditions, and tire quality. On average, motorcycle tires may need replacement every 5,000 to 15,000 miles or every 2 to 5 years.
Are OEM motorcycle tires the same as aftermarket? OEM (Original Equipment Manufacturer) tires are specifically designed for a particular motorcycle model. Aftermarket tires can vary in design and performance, so they may not be the same as OEM tires.
What does a fat rear tire do for a motorcycle? A fat rear tire can enhance a motorcycle’s aesthetics and provide more traction, especially during acceleration. However, it can also affect handling and agility.
How do I know if my motorcycle tire is out of round? You may notice a wobbling sensation or uneven wear on the tire if it’s out of round. Inspecting the tire’s tread for irregular wear patterns can also provide clues.
What are the disadvantages of wider tires? Wider tires can negatively impact handling by making steering heavier and reducing agility. They may also be more prone to hydroplaning in wet conditions.
Does a wider tire give a smoother ride? A wider tire may offer a smoother ride in certain situations by providing more contact with the road, but it can also depend on tire construction and road conditions.
What is a good lean angle on a motorcycle? A good lean angle for a motorcycle depends on the rider’s skill level, bike type, and riding conditions. Sport bikes with riders experienced in cornering can achieve significant lean angles.
Should front and rear motorcycle tires be the same? Front and rear motorcycle tires don’t need to be the same, but they should be compatible with your motorcycle and designed for their respective positions (front or rear).
Do motorcycle tires need to be aligned? Motorcycle tires don’t need alignment like car tires, but it’s crucial to ensure they are properly balanced when mounted to the wheel.
Can I use a front motorcycle tire on the rear? Using a front motorcycle tire on the rear may not provide the desired performance and stability. It’s best to use tires specifically designed for the front and rear positions.
Does motorcycle tire direction matter? Yes, motorcycle tire direction matters for radial tires, which have a designated rotation direction indicated by an arrow on the sidewall. Mounting them incorrectly can affect handling and performance.
Do front and back tires need to match? Front and rear tires don’t necessarily need to match, but they should be compatible with your motorcycle and designed for their respective positions.
Which tire is more important on a motorcycle? Both front and rear tires are essential on a motorcycle, but the front tire plays a more critical role in steering and stability, while the rear tire contributes to acceleration and traction.
How long can you ride with a plug in a motorcycle tire? A plugged motorcycle tire can be safe for a while, but it’s not a permanent solution. It’s best to replace or repair the tire according to safety guidelines and local regulations.
Why can’t you patch a motorcycle tire? Patching a motorcycle tire may not provide a reliable and durable repair, as it might not fully address the damage. It’s generally recommended to replace or plug the tire instead.
Is it better to patch or plug a tire? Plugging is a more common and quicker repair for small punctures in motorcycle tires. Patching is a more thorough repair but requires the tire to be removed from the rim.
What is a darkside motorcycle tire? A “darkside” motorcycle tire refers to the practice of using a car tire on the rear wheel of a motorcycle. This is not recommended by most motorcycle manufacturers and can have safety implications.
What is the yellow dot on a motorcycle tire? The yellow dot on a motorcycle tire indicates the lightest point on the tire’s carcass. Mounting the tire with the yellow dot aligned with the valve stem can help balance the wheel.
What is the R on a motorcycle tire? The “R” on a motorcycle tire indicates that it’s a radial tire, which is constructed with layers of fabric running radially from the center of the tire. Radial tires offer certain performance advantages.
What does 74 H mean on a motorcycle tire? The “74” represents the load index, indicating the tire’s maximum load-carrying capacity, and “H” is the speed rating, indicating the maximum speed the tire is rated for. The specific values for load and speed can vary.
What does 73w mean on a motorcycle tire? The “73” represents the load index, indicating the tire’s maximum load-carrying capacity, and “W” is the speed rating, indicating the maximum speed the tire is rated for. The specific values for load and speed can vary.
What does 71 H mean on a motorcycle tire? The “71” represents the load index, indicating the tire’s maximum load-carrying capacity, and “H” is the speed rating, indicating the maximum speed the tire is rated for. The specific values for load and speed can vary.
Is a wider front tire better on a motorcycle? A wider front tire can provide more stability and grip in certain situations, but it can also affect steering responsiveness. The choice depends on your riding style and motorcycle design.
Is a wider tire better on a motorcycle? A wider tire can provide more traction and stability, but it can also affect handling and steering. The choice of tire width depends on your riding preferences and the motorcycle’s intended use.
Do wider tires on a motorcycle make a difference? Wider tires on a motorcycle can make a significant difference in terms of traction, stability, and handling characteristics, but it depends on the specific tire and the motorcycle’s design.
Is 80 100 18 and 2.75 18 the same? They are not the same. 80/100-18 and 2.75-18 have different width and aspect ratio characteristics. The first number represents the width, and the second number represents the aspect ratio. These differences can impact handling and compatibility.
What does 120 80 17 mean? In the tire size 120/80-17, the first number (120) represents the tire’s width in millimeters, the second number (80) represents the aspect ratio, and the third number (17) indicates the rim diameter in inches.
What does 130 90 17 mean? In the tire size 130/90-17, the first number (130) represents the tire’s width in millimeters, the second number (90) represents the aspect ratio, and the third number (17) indicates the rim diameter in inches.
Is 35 12.50 17 the same as 315 70 17? No, they are not the same. 35×12.50R17 and 315/70R17 are different tire size standards, and they have distinct width, aspect ratio, and diameter measurements.
Is 70 over 120 good? The “70” over “120” represents the aspect ratio (70%) and width (120 millimeters) of a tire. Whether it’s “good” or suitable depends on the specific application and motorcycle.
What does 110 80 17 mean on tyre size? In the tire size 110/80-17, the first number (110) represents the tire’s width in millimeters, the second number (80) represents the aspect ratio, and the third number (17) indicates the rim diameter in inches.
What does 180 55 r17 mean? In the tire size 180/55R17, the first number (180) represents the tire’s width in millimeters, the second number (55) represents the aspect ratio, and the “R” indicates that it’s a radial tire. The third number (17) indicates the rim diameter in inches.
What does 50 r17 225 stand for? This appears to be a tire size specification with some missing information. “R17” indicates a 17-inch rim diameter. However, “50” and “225” would typically represent the tire’s width and aspect ratio, respectively, but they need additional context to provide a complete tire size.
What is the difference between a 120 80 19 and a 120 90 19? The primary difference between these two tire sizes is the aspect ratio. In a 120/80-19 tire, the aspect ratio is 80%, while in a 120/90-19 tire, the aspect ratio is 90%. This means the 120/90-19 tire has a taller sidewall, which can impact the ride height and handling characteristics.
What is the difference between 120 80 18 and 4.60 18? In general, both 120/80-18 and 4.60-18 tires have similar width measurements and can fit an 18-inch rim. However, the specific dimensions may vary slightly depending on the manufacturer and tire model.
How long should I change motorcycle tires? Motorcycle tire lifespan can vary widely depending on factors like riding style, road conditions, and tire quality. On average, motorcycle tires may need replacement every 5,000 to 15,000 miles or every 2 to 5 years.
How do I know when my motorcycle tires need replacing? You should replace your motorcycle tires when they show signs of significant wear, such as reduced tread depth, cracking, or damage. Regularly inspecting your tires and following manufacturer recommendations is essential.
Why do motorcycle tires not last long? Motorcycle tires tend to wear out faster than car tires because they have less contact area with the road, are subjected to higher loads, and are made from softer rubber compounds designed for grip and performance.
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