If you use a 265 60 R17 tire (instead of a 265 65 R17), it will be the same diameter/circumference as a 245/65R17 tire but with the extra width.
You can use the 265 65 R17 if you wanted a wider and slightly taller tire. You don't really need to reprogram the vehicle for such a minor increase in tire diameter, since it will decrease as the tire wears. Just be aware that the speedometer will read slightly slower than you are actually going, so keep it a few km's under when going the speed limit.