I have a KLX250 (now a 331cc supermoto). The only real problem I can foresee is the tank size and you may want to look into a Clarke or IMS tank.
I am not sure that will be available where I'll be, or that I'll find someone able to install it (although I think it's something I could do myself, I'm not totally inept at these things)...
I had my stock KLX to 90 miles per hour indicated (probably like 82 MPH actual speed or 130 kmh), of course this was on a flat road with the throttle pinned and tucked as best as I could. The KLX will do 60 mph (100 kmh) all day long.
That is quite reassuring, the few numbers I found on the internet on in potato quality youtube videos were either unrealistic or extremely discouraging. Luckily the commute will be on flat roads. The twisties and angles will be reserved for my weekend exploration trips. 60kmh is good as that is also the speed limit on most of the roads I'll be doing.
I don't know that I would want to do 100 kilometers everyday on any bike besides a Gold Wing, but the KLX will certainly do it.
I can see where you're coming from, but I don't plan to do it -everyday-. Maybe 2/3 days a week, and only in clear conditions.
For tires I would get the best rain tire you can find and the D-Tracker will probably have more options in this area due to the 17 inch wheels. Bikes are the same otherwise as you thought.
Good tip, thanks.
I have no experience with the other bikes mentioned, but the Z250 is a twin from what I can see and will have more power stock than the KLX/D-Tracker so it will be capable of higher speeds.
If you don't have a need to do more than 100 kmh I think the D-Tracker would probably be "better" since it has a more upright riding position and the dirt bike suspension is pretty plush and will likely soak up mountain road irregularities better than the Z250.
Best of luck with whatever you decide.
Ok, thanks for your input. I am still at a complete loss but I got some 2/3 months before actually purchasing the bike, thus plenty of time to make my mind up. Also, once I'm there, I'm going to be looking at what most people ride, as that's usually one's best choice. You know, when you go to Rome...
To be honest I'm actually already shifting my inclination towards a slightly larger displacement bike, something in the 400-650 range: despite being a little more expensive in both initial cost and insurance/taxes/maintenance, it will surely allow for easier cruising at any speed, have less problems with mountains roads, and it actually opens up more buying options.
Stay tuna. I'll surely pester you guys more, and update you on my ultimate decision (with pics!