275F? There is definitely something wrong. I rode all day long last week from Missoula, MT to Gillette, WY and the temperature was over 100F the whole way. It peaked at 106F.
While riding on the highway I never saw the temperature of the engine go above 215F and when pulling off I saw it peak at about 221F. So that route, if you are not familiar with it involves a number of mountain passes so much of that was climbing at 80 MPH. In other words, the engine was working quite a bit.
Under more typical riding conditions the bike usually runs in the range of 185F-190F.
I'm not sure how long a coolant temp of 275 can be sustained without engine damage but my guess is that it's not all that long.