Dirt Bike Tire Size Conversion Calculator

FAQs

What tire size is 4.00 x 18? A 4.00 x 18 tire typically has a width of around 4.00 inches and is designed to fit an 18-inch rim.

How do you read a dirt bike tire size? Dirt bike tire sizes are typically expressed as three numbers, such as 90/90-19. The first number (90 in this example) represents the tire’s width in millimeters. The second number (90) represents the aspect ratio or profile of the tire (the height of the sidewall as a percentage of the width). The third number (19) indicates the diameter of the rim in inches.

Is 90 90 18 the same as 3.00 18? No, they are not the same. A 90/90-18 tire has a width of 90 millimeters, while a 3.00-18 tire has a width of 3.00 inches. They have different measurement units and dimensions.

Is 90 90 19 and 3.25 19 the same? No, they are not the same. A 90/90-19 tire has a width of 90 millimeters, while a 3.25-19 tire has a width of approximately 3.25 inches. They have different measurement units and dimensions.

How wide is a 4.00 18 tire? A 4.00-18 tire is approximately 4.00 inches wide.

What is a 4.60 18 tire equivalent to? A 4.60-18 tire is roughly equivalent to a tire with a width of 4.60 inches designed to fit an 18-inch rim.

Can you put bigger tires on a dirt bike? You can put slightly larger tires on a dirt bike, but it’s essential to stay within the manufacturer’s recommended tire sizes to ensure safety and proper handling. Significant changes in tire size can affect the bike’s performance and handling characteristics.

What size tires are best for a 450 dirt bike? The tire size for a 450cc dirt bike can vary based on personal preference and riding conditions. Common tire sizes for a 450 dirt bike include 80/100-21 for the front and 110/100-18 for the rear, but riders may choose different sizes depending on their needs.

What’s the difference between a 110 and 120 dirt bike tire? The main difference between a 110 and 120 dirt bike tire is the width. A 110 tire is narrower than a 120 tire. The numbers represent the width of the tire in millimeters. A 120 tire will have a wider footprint, which can provide better traction in some conditions but may also affect handling.

What does 100 90 18 mean on a tire? In a tire size like 100/90-18, the first number (100) represents the tire’s width in millimeters, the second number (90) indicates the aspect ratio (the height of the sidewall as a percentage of the width), and the third number (18) signifies the diameter of the rim in inches.

What does the size 3.00 18 mean on a tire? In a tire size like 3.00-18, the number before the hyphen (3.00) represents the tire’s width in inches, and the number after the hyphen (18) indicates the diameter of the rim in inches.

Is 90 100 16 the same as 3.00 16? No, they are not the same. A 90/100-16 tire has a width of 90 millimeters and an aspect ratio of 100%, while a 3.00-16 tire has a width of approximately 3.00 inches. They have different measurement units and dimensions.

What does 90 90 19 mean on a tire? In a tire size like 90/90-19, the first number (90) represents the tire’s width in millimeters, the second number (90) indicates the aspect ratio (the height of the sidewall as a percentage of the width), and the third number (19) signifies the diameter of the rim in inches.

What does the 90 90 tire size mean? The tire size 90/90 on a dirt bike tire means that the tire has a width of 90 millimeters and an aspect ratio of 90%. The aspect ratio represents the sidewall height as a percentage of the tire’s width.

What is the difference between 100 90 and 90 90 tire? The main difference is in the aspect ratio and possibly the width. A 100/90 tire has a higher aspect ratio (sidewall height as a percentage of width) compared to a 90/90 tire. This means the 100/90 tire will have a slightly taller sidewall, which can affect handling and grip characteristics. The width may also vary between the two.

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 is designed to fit a 17-inch rim.

What does the 100 90 mean on a tire? In a tire size like 100/90, the first number (100) represents the tire’s width in millimeters, and the second number (90) indicates the aspect ratio (the height of the sidewall as a percentage of the width).

How wide is a 4.00 tire? A 4.00 tire is approximately 4.00 inches wide.

What is the difference between 90 100 10 and 3.50 10? The primary difference is in the measurement units and the specific sizes. A 90/100-10 tire has a width of 90 millimeters and an aspect ratio of 100%, while a 3.50-10 tire has a width of approximately 3.50 inches. They have different measurement units and dimensions.

Can you put 19-inch tires on 18-inch rims? Generally, it is not recommended to put 19-inch tires on 18-inch rims as they are not compatible. The tire’s diameter must match the rim size for proper fit and performance.

What tire size can I substitute? Tire substitutions should be done carefully, ensuring that the new tire size is within the manufacturer’s recommended specifications. Consulting with a professional mechanic or referencing the owner’s manual is recommended for safe tire substitutions.

What happens if you put a bigger rear sprocket on a dirt bike? Putting a larger rear sprocket on a dirt bike will generally increase the bike’s acceleration but decrease its top speed. It will also make the bike easier to wheelie. However, it may reduce overall top speed and affect fuel efficiency.

What do the 3 numbers mean on a dirt bike tire? The three numbers on a dirt bike tire represent its width, aspect ratio, and rim diameter. For example, in a tire size like 90/90-19, the first number (90) represents the tire’s width in millimeters, the second number (90) indicates the aspect ratio (sidewall height as a percentage of the width), and the third number (19) signifies the diameter of the rim in inches.

Are dirt bike tires street legal? Not all dirt bike tires are street legal. It depends on the specific tire’s design and composition. Some dirt bike tires are DOT (Department of Transportation) approved for street use, while others are intended solely for off-road use. Always check the tire’s labeling and specifications to determine its legality for street use.

Is a 450 harder to ride than a 250? Generally, a 450cc dirt bike can be more challenging to ride than a 250cc bike, especially for beginners. The 450cc bikes tend to have more power and torque, which can be more challenging to control for inexperienced riders. They are often preferred by more experienced riders who can handle the extra power.

Are 450 dirt bikes fast? Yes, 450cc dirt bikes are generally faster than their smaller counterparts, such as 250cc bikes. They have more engine power and can achieve higher top speeds.

Is a 450 dirt bike too big for a beginner? A 450cc dirt bike can be too big and powerful for a beginner rider, especially if they have little or no previous riding experience. It’s often recommended that beginners start with smaller and less powerful bikes to develop their riding skills before transitioning to a 450cc bike.

Can you run a 110 tire on a 450? Yes, you can run a 110-size rear tire on a 450cc dirt bike. The tire size can vary based on personal preference and riding conditions.

How fast is a 110cc dirt bike in mph? A 110cc dirt bike can reach speeds of approximately 35 to 50 mph, depending on factors such as the bike’s design, gearing, and rider weight.

What is the next size up from a 110 dirt bike? The next size up from a 110cc dirt bike is typically a 125cc dirt bike. It offers more power and performance.

What is the 105% rule on tires? The 105% rule on tires refers to selecting a tire size that is within 105% of the original tire’s diameter when replacing tires on a vehicle. This rule helps maintain the accuracy of the speedometer and ensures that the new tires are compatible with the vehicle’s suspension and clearance.

What does 120/80-18 mean on a tire? In a tire size like 120/80-18, the first number (120) represents the tire’s width in millimeters, the second number (80) indicates the aspect ratio (sidewall height as a percentage of the width), and the third number (18) signifies the diameter of the rim in inches.

What does 90/80-17 mean on a tire? In a tire size like 90/80-17, the first number (90) represents the tire’s width in millimeters, the second number (80) indicates the aspect ratio (sidewall height as a percentage of the width), and the third number (17) signifies the diameter of the rim in inches.

Can I fit 235 tires instead of 225? Yes, you can generally fit 235 tires instead of 225 tires, but it’s essential to ensure that the new tire size is compatible with your vehicle’s specifications and has adequate clearance. Keep in mind that changing tire sizes can affect the speedometer’s accuracy and handling characteristics.

Can I use 65 instead of 70 tires? Yes, you can use 65-profile tires instead of 70-profile tires as long as they are compatible with your vehicle’s specifications. The change in aspect ratio will affect the sidewall height and may impact the ride comfort and handling.

Can I use 225 tires instead of 215? Yes, you can use 225 tires instead of 215 tires as long as they are compatible with your vehicle’s specifications and have adequate clearance. It’s essential to ensure that the new tire size is within the manufacturer’s recommended range.

How wide is a 90/80 tire? A 90/80 tire typically has a width of 90 millimeters.

What does 70/100 tire mean? In a tire size like 70/100, the first number (70) represents the tire’s width in millimeters, and the second number (100) indicates the aspect ratio (sidewall height as a percentage of the width).

Are wider tires better? Wider tires can offer better traction and stability in some conditions, but it depends on the specific application and vehicle. Wider tires can also affect fuel efficiency and handling, so the choice of tire width should be based on your driving needs and the manufacturer’s recommendations.

What does R mean on a tire? The “R” on a tire stands for “radial.” It indicates that the tire’s internal construction features radial layers of fabric, which are designed to provide better stability and handling characteristics compared to bias-ply tires.

Is a 50 or 60 tire wider? A 60 tire is wider than a 50 tire. The numbers represent the aspect ratio, with the second number indicating the sidewall height as a percentage of the tire’s width. A higher aspect ratio (e.g., 60) results in a taller sidewall, making the tire wider overall.

How wide are 480 tires? Tire sizes are typically not expressed as “480.” It’s essential to have a complete tire size, including the width, aspect ratio, and rim diameter, to determine the tire’s width accurately.

How wide is a 120 motorcycle tire? A 120 motorcycle tire typically has a width of 120 millimeters.

Is 90/90-10 the same as 3.00-10? No, they are not the same. A 90/90-10 tire has a width of 90 millimeters, while a 3.00-10 tire has a width of approximately 3.00 inches. They have different measurement units and dimensions.

How wide is a 100/90-19 tire? A 100/90-19 tire typically has a width of 100 millimeters.

Can I put a 17-inch tire on an 18-inch rim? No, you cannot put a 17-inch tire on an 18-inch rim. The tire’s diameter must match the rim size for proper fit and performance.

What is the advantage of 20-inch wheels over 18-inch wheels? 20-inch wheels can provide better handling and stability, especially in high-performance and sports cars. They often have a lower profile tire, which can improve cornering and reduce sidewall flex. However, ride comfort may be sacrificed with larger wheels.

Are 18-inch tires cheaper than 19-inch? Generally, 18-inch tires are often cheaper than 19-inch tires because they are more commonly produced and have a larger market. However, prices can vary based on the tire brand, model, and specifications.

How do I convert tire sizes? To convert tire sizes, you need to maintain the same aspect ratio (second number) while adjusting the width and rim diameter. For example, if you want to convert a 225/50-17 tire to a 235 width with the same aspect ratio and 17-inch rim, you can look for a tire labeled 235/50-17.