Quote:
Originally Posted by ProDigit
A 250 guarantees 60mph, with a little head wind, and 75mph tops on level ground.
But not without screaming 7-10k rpm.
And this suffers MPG.
Performance wise, it's just under what you want. There's no headroom on the interstate, and you'll have to be tailgating to keep up at 75mph.
So I would say 'no'.
With the increase of CC, the bike can both lower revs to get there, and increase performance. 400cc Hi rev or 500cc with torque down low, is the minimum you need nowadays. And anything over 700cc, on the streets, is overkill IMHO.
I have a 750cc twin, and it starts to get fun around 100mph, which is well above comfort and street legal
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The CBR250R and Ninja 250 will do better than that for sure, but the key to easy cruising at highways speeds is going to be improved aero and possibly higher gearing.
Without that there's not going to be much left for passing or any significant acceleration.
With the right aero, or even some aero improvements, a newer 250 can do really well at highways speeds.