Motorcycle Tire Aspect Ratio Calculator

FAQs

What is the aspect ratio of a motorcycle tire? The aspect ratio of a motorcycle tire is typically expressed as a percentage and represents the ratio of the tire’s sidewall height to its width.

How do you calculate tire aspect ratio? To calculate the aspect ratio of a motorcycle tire, divide the height of the tire’s sidewall (measured from the rim to the tread) by the tire’s width. Then, multiply the result by 100 to get the aspect ratio as a percentage.

What does 72w mean on a motorcycle tire? The “72W” on a motorcycle tire is a tire size and speed rating code. “72” refers to the aspect ratio (sidewall height as a percentage of the tire’s width), and “W” indicates the tire’s speed rating, which means the tire is rated for speeds up to approximately 168 mph (270 km/h).

How wide is a 120 motorcycle tire? A 120 motorcycle tire is approximately 120 millimeters wide.

Does aspect ratio matter on motorcycle tires? Yes, the aspect ratio of a motorcycle tire matters. It affects the tire’s profile, handling characteristics, and ride comfort. Higher aspect ratios generally provide a more comfortable ride, while lower aspect ratios can improve handling and stability.

Can I increase tire aspect ratio? You can change the aspect ratio of your motorcycle tire, but it’s important to choose a tire size that is compatible with your motorcycle’s rim and suspension. Consult your motorcycle’s manufacturer or a tire professional for guidance.

Does aspect ratio matter on tire size? Yes, the aspect ratio is an essential part of tire size as it affects the tire’s overall dimensions, including its height and profile.

How much does tire aspect ratio matter? The aspect ratio matters as it affects the tire’s performance characteristics. Higher aspect ratios provide a softer ride, while lower aspect ratios can enhance handling. The choice depends on your riding preferences and the type of motorcycle.

Can I use 60 instead of 55 tires? You can use a tire with a different aspect ratio, but it may affect your motorcycle’s handling and performance. Consult your motorcycle manufacturer’s recommendations and a tire professional for compatibility.

What does 69W mean on a motorcycle tire? The “69W” on a motorcycle tire indicates the tire size and speed rating. “69” is the aspect ratio, and “W” represents the speed rating, allowing speeds up to approximately 168 mph (270 km/h).

What does 78W mean on a motorcycle tire? The “78W” on a motorcycle tire is a tire size and speed rating code. “78” refers to the aspect ratio, and “W” indicates a speed rating of approximately 168 mph (270 km/h).

What does 58W mean on a motorcycle tire? The “58W” on a motorcycle tire signifies the tire size and speed rating. “58” is the aspect ratio, and “W” represents a speed rating of approximately 168 mph (270 km/h).

What does 90/90 mean on a motorcycle tire? “90/90” on a motorcycle tire is a designation for the tire’s size, indicating that it is 90 millimeters wide and has a 90% aspect ratio.

What does M mean on a motorcycle tire? The “M” on a motorcycle tire typically indicates that it is a tire designed for off-road or motocross use.

How wide is a 200 motorcycle tire? A 200 motorcycle tire is approximately 200 millimeters wide.

Can I put a wider tire on my motorcycle rim? You can put a slightly wider tire on your motorcycle rim if it’s within the recommended range for your specific motorcycle model. Check your motorcycle’s owner’s manual or consult a professional for guidance.

Do wider motorcycle tires make a difference? Wider motorcycle tires can impact handling, stability, and traction. The choice depends on your riding style and the intended use of your motorcycle.

Why are rear tires bigger than the front motorcycle? Rear tires on motorcycles are often wider than front tires to provide better traction, stability, and handling, as the rear wheel is responsible for delivering power to the road.

Does tire aspect ratio affect the speedometer? Changing the aspect ratio of your tire can affect the accuracy of your motorcycle’s speedometer. A larger aspect ratio can result in a slightly slower speedometer reading, while a smaller aspect ratio can make it read slightly faster.

How much wider can I go on tires? The maximum tire width you can use depends on your motorcycle’s specifications, including the clearance within the fork and swingarm. Consult your motorcycle manufacturer’s recommendations and a tire professional for guidance.

Is it OK to increase tire width? Increasing tire width can affect handling and performance, so it’s essential to stay within the recommended tire sizes for your motorcycle. Consult a professional for guidance.

Can I fit 235 tires instead of 225? These tire sizes are not typically used for motorcycles. They are more common for cars. Motorcycles use different sizing conventions.

Can I use 65 instead of 70 tires? You can use a tire with a different aspect ratio, but it may affect your motorcycle’s handling and performance. Consult your motorcycle manufacturer’s recommendations and a tire professional for compatibility.

How much taller is a 65 tire than a 60? A tire with a 65 aspect ratio will have a taller sidewall compared to a tire with a 60 aspect ratio. The exact height difference depends on the tire’s width.

Can I use 55 tires instead of 65? You can use a tire with a different aspect ratio, but it may affect your motorcycle’s handling and performance. Consult your motorcycle manufacturer’s recommendations and a tire professional for compatibility.

What is the 3 percent tire rule? The 3 percent tire rule is a guideline that suggests not deviating more than 3 percent from the overall diameter of the stock tire when choosing an aftermarket tire. This helps maintain accurate speedometer readings and minimize handling changes.

Can I use 45 instead of 55 tires? You can use a tire with a different aspect ratio, but it may affect your motorcycle’s handling and performance. Consult your motorcycle manufacturer’s recommendations and a tire professional for compatibility.

How much taller is a 65 tire than a 55? A tire with a 65 aspect ratio will have a taller sidewall compared to a tire with a 55 aspect ratio. The exact height difference depends on the tire’s width.

Which tire is taller, 60 or 70? A tire with a 70 aspect ratio will generally be taller than a tire with a 60 aspect ratio when comparing tires of the same width.

Is a 55 tire wider than a 50? No, a tire with a 55 aspect ratio is not necessarily wider than a tire with a 50 aspect ratio. Aspect ratio represents the sidewall height as a percentage of the tire’s width, not its width.

What is the highest speed-rated motorcycle tire? The highest speed-rated motorcycle tires are usually rated for speeds up to approximately 186 mph (300 km/h) or more, often indicated by the letter “Z” in the tire’s speed rating code.

What does 2CT mean for motorcycle tires? “2CT” stands for “Two Compound Technology” and is a feature found in some motorcycle tires. It means that the tire has a dual-compound construction, with a harder compound in the center for durability and a softer compound on the sides for enhanced grip in corners.

What is the difference between R and ZR motorcycle tires? The “R” in motorcycle tire sizes stands for “Radial,” indicating that the tire has radial construction. “ZR” is also used in tire sizes to denote high-speed capability, typically for tires rated for speeds over 149 mph (240 km/h).

What does the last number on a motorcycle tire mean? The last number on a motorcycle tire, often preceded by a letter such as “W,” “V,” or “H,” represents the tire’s speed rating. It indicates the maximum speed at which the tire can be safely used.

How long do motorcycle tires last? The lifespan of motorcycle tires varies depending on factors such as riding style, road conditions, and tire quality. On average, motorcycle tires can last anywhere from 5,000 to 15,000 miles (8,000 to 24,000 kilometers). However, they should also be inspected for signs of wear and aging regularly.

What does R mean on motorcycle tires? The “R” in motorcycle tire sizes stands for “Radial,” indicating that the tire has radial construction. Radial tires have a different internal structure compared to bias-ply tires, which affects their performance characteristics.

What does MS mean on tires? “MS” on tires stands for “Mud and Snow,” indicating that the tire is designed for use in a variety of weather conditions, including mud and snow. It is a common designation for all-season or winter tires.

What does the size 90/80 mean on a tire? The tire size “90/80” indicates that the tire has a width of 90 millimeters and an aspect ratio of 80%. It specifies the tire’s dimensions.

What do the 3 numbers mean on motorcycle tire size? The three numbers on a motorcycle tire size (e.g., 120/70R17) typically represent the tire’s width, aspect ratio, and rim diameter. In this example, “120” is the width in millimeters, “70” is the aspect ratio as a percentage, and “17” is the rim diameter in inches.

What is the optimal motorcycle tire pressure? The optimal tire pressure for a motorcycle varies depending on the specific make and model of the motorcycle and the type of tire being used. You can find the recommended tire pressure in your motorcycle’s owner’s manual or on a label located on the motorcycle itself.

What is the difference between 100/90 and 90/90 tire? The difference between “100/90” and “90/90” in motorcycle tire sizes is in the tire’s width and aspect ratio. “100/90” has a wider width (100 mm) compared to “90/90” (90 mm), while both have the same aspect ratio of 90%.

What is the difference between 190/50 and 190/55 motorcycle tires? The difference between “190/50” and “190/55” in motorcycle tire sizes is in the aspect ratio. “190/50” has a lower aspect ratio (50%) compared to “190/55” (55%), meaning that the latter has a taller sidewall.