The regular CTS has tire pressure monitors???? I though those were only for runflats on the CTS-V to reduce the weight of having a spare tire in the trunk. That's a cool feature if they do offer it with the display on the DIC. I don't understand why they wouldn't offer it on the Nav also, if they have it in the DIC head unit. Obviously the firmware isn't there on older Navs, since that wasn't an option previously. But the new Navs ought to have it, if TPS is also available.