The KTM Duke 125 is designed to accommodate specific tire sizes, and it is generally recommended to stick to the manufacturer's recommended tire specifications. While it might be physically possible to fit a different size tire on the bike, there are several factors to consider:
Compatibility: The recommended tire size for the KTM Duke 125 is typically provided by the manufacturer based on factors such as handling, stability, and overall performance of the motorcycle. Altering the tire size can affect the bike's handling characteristics, stability, and safety. It is important to ensure that the replacement tire is compatible with the bike's frame, suspension, and braking system.
Speedometer and odometer accuracy: Changing the tire size can affect the accuracy of the speedometer and odometer readings. A smaller tire with a smaller diameter could result in a higher indicated speed and inaccurate mileage readings.
Insurance and legal implications: Modifying the tire size may have implications for insurance coverage and legal compliance. It's important to check local regulations and consult with your insurance provider to ensure that any modifications you make are within legal limits.
Given these considerations, it is generally recommended to consult with a professional mechanic or authorized KTM dealer for specific guidance on tire replacements for your KTM Duke 125. They will have the expertise and knowledge to advise you on suitable tire options that maintain the bike's performance and safety.