Yes, they have different calibrations, that can be recalibrated using a tech2 scan tool. My 03 originally had 265/70/16 tires. I went to 17 inch wheels with 265/70/17 tires and with tech2 my neighbor has recalibrated tire size in the software. I just got new 18" wheels and upgraded to 265/65/18. The difference in size was so minimal that I haven't recalibrated.
Obviously the dealer could recalibrate for you, but I'm sure they charge way to much. Check out any local shops that may be able to do it. Takes all of 5 minutes to do.