Yes, heavier tire/wheel combos reduce MPG's - takes more power to get them spinning. Also, aluminum dissipates heat better than steel so it runs cooler - Cooler tires wear a tad slower.
Seems like these engines need to be worked hard regularly to get things hot enough for soot to burn off and clear the DPF. Since I live in Denver area, I go up I-70 into the mountains somewhat regularly in addition to the periodic road trips - seems to help keep soot burned off.
Mine is a 2015...