I can't say what the range "with" the covers is, since I removed them before I even sat in the truck. The delivery specialist was amused by this.The elephant in the room...range with vs. without?
I can say the range without the covers is good (imo). I did a road trip over the weekend and averaged 410W/mile over the ~580 mile trip. I used conserve mode, but was driving 75-80mph. I am happy with the result. Covers may do better... But I don't feel they are necessary, even for trips.