The recommended engine displacement for commuting on a highway can vary depending on several factors, including local regulations and personal preferences. However, motorcycles with engine displacements ranging from 250cc to 500cc are generally considered suitable for highway commuting.
A 250cc motorcycle can provide sufficient power for highway speeds and is often more fuel-efficient, making it a popular choice for commuting. These motorcycles are typically lightweight and nimble, which can be advantageous in urban traffic. However, it's important to consider your specific needs, such as the speed limits and traffic conditions on your regular commute, as well as your comfort level with a smaller engine.
Motorcycles with engine displacements between 500cc and 750cc are also commonly used for highway commuting. These bikes offer more power and higher top speeds, which can be advantageous if you frequently encounter faster-moving traffic or need extra acceleration for passing maneuvers.
Ultimately, the choice of engine displacement for highway commuting depends on factors such as your comfort level, local regulations, and the specific demands of your commute. It's advisable to test ride different motorcycles with varying engine displacements to determine which one best suits your needs and riding preferences.