Uh, who doesn't give automotive wheels in inches? I'm pretty sure most of the world uses inch measurements for wheel diameter, in the same way flight altitude is given in feet for aircraft.

If y'all insist, I can give some statistics for the legs of the journey I drove:

Average speed, MD-NJ: 102,6 km/h. Thank NJ traffic on the Turnpike
Average speed, NJ-PA: 115,6 km/h
Average consumption, MD-NJ: 8,1 l/100km (29 US mpg)
Average consumption, NJ-PA: 8,0 l/100m (29,3 US mpg)

I-78 is a breeze to drive, although the long 55mph section in PA is irritating. Does no one follow the speed limit in PA? I was paranoid on the return trip that there was going to be speed enforcement.......spending time in VA does that to ya.