The answer to the question "what is considered high mileage for a motorcycle?" is not straightforward and depends on several factors. According to the search results, here are some key points to consider:

• Generally, high mileage on a motorcycle is anywhere from 20,000 to 50,000 miles.
• Smaller motorcycles like sports bikes are considered to be high mileage at between 20,000 to 30,000 miles, while larger models like cruisers and touring bikes can take more miles.
• The type of motorcycle is an important factor to consider. Touring motorcycles are built to take a lot of miles before they need maintenance, while sport bikes acquire the "high mileage" designation much more quickly than cruisers and baggers.
• Mileage is only part of the story with any vehicle because how its been cared for counts a lot. A huge amount depends on the specific model, the owners level of care, and other factors.
• A motorcycles longevity is determined by several factors, including how it was cared for, repaired, and maintained.
• The rarity, age, and price of a bike should all factor in what you consider "high mileage".
• A good bike that is taken care of properly can often go for more than 100,000 miles.

In summary, the answer to the question "what is considered high mileage for a motorcycle?" is not a simple number, but rather depends on several factors such as the type of motorcycle, how it was cared for, and other factors. While high mileage on a motorcycle is generally considered to be anywhere from 20,000 to 50,000 miles, a well-maintained motorcycle can often go for more than 100,000 miles.