You've been able to get 23-inch wheels on the DBX for a while now, and they're the only size option on the DBX S, though the DBX707 is available with 22s. Opting for the magnesium wheels saves 42 pounds of unsprung mass overall (about 11 pounds per wheel), which is not insignificant. Aston says choosing the magnesium wheels brings improvements in steering feel, handling behavior and ride quality, and it's true. Aston also recalibrated the Sport and Sport+ drive modes for even more of a difference between them. It's a joyous experience to wring out the DBX S on a back road and then settle into a slow cruise around town, with that exhaust making wonderful noises the whole time.