I had the chance to look at the Norco Search XR; If you are looking for a carbon frame that has gobs of tire clearance this may be your new bike for 2018.
The model I looked at had 700x40c tires and it looked to me like there was close to 1/2" clearance on each side from tread to inner chain stays. Looks like the manufacturers are finally getting the memo on tire clearance with 700c tires!