my 12' high Palazzo had no problems with ANY of the tunnels, no matter what 'height' they are stated - that is the min 'low' point at the very outside of the tunnel, where you obviously can't be driving anyway - stay in the center and you'll be easy.... all the way.
We STARTED at the Cherokee, NC 'end', where the lowest stated tunnels are, and had no issues...
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada.... formerly GA, then AL, now back to north Georgia! : )