This is very true, you should do the speed that is safe for the conditions. At the same time it’s very hard to keep some bikes at lower limits, it’s possible to do but they absolutely hate it, my bike can’t stand town riding, it protests by running extremely hot and being jerky, if you’re going through a town centre at 20 MPH you have to pull the clutch in and coast it/slip it a bit because it wants to stall, which is probably the reason I don’t use it for commuting, driving a car,even with the traffic is more enjoyable. In all essence you are using the wrong bike for town centre riding, big CC/BHP and slow don't really mix You could also make the same argument in reverse - on the open road a more powerful and larger machine is more suited than a 125, even an awesomely stupendous Chinese 125.