If by "darksiding" you mean using a car tire instead of a motorcycle tire on the rear wheel of a motorcycle, then yes, it can be considered dangerous. This practice is also known as "car tire conversion" or "car tire on a motorcycle."
There are several reasons why darksiding can be risky:
Handling and Stability: Motorcycle tires are specifically designed to provide optimal handling and stability for motorcycles. They have a different profile, tread pattern, and sidewall construction compared to car tires. Car tires are not designed to lean into turns, and they can compromise the handling and stability of a motorcycle.
Traction: Motorcycle tires are engineered to provide maximum grip and traction, particularly during cornering. Car tires, on the other hand, may not offer the same level of traction, especially when leaned over in a turn. This can increase the risk of sliding or losing control of the motorcycle.
Heat Buildup: Motorcycle tires are designed to dissipate heat effectively, especially during prolonged riding. Car tires may not have the same heat dissipation capabilities. The increased heat buildup from using a car tire on a motorcycle can potentially lead to tire failure or reduced performance.
Compromised Safety Systems: Many modern motorcycles come equipped with advanced safety features, such as antilock braking systems (ABS) and traction control. These systems are calibrated to work with specific motorcycle tires. Using a car tire can potentially disrupt the proper functioning of these safety systems, reducing their effectiveness.
It's important to note that darksiding is not recommended by motorcycle manufacturers or tire manufacturers. They design and test their products to work together optimally, ensuring the safety and performance of the motorcycle. It's always best to use the appropriate motorcycle tires for your specific bike to ensure optimal handling, traction, and safety.