These motors are light. If you integrate them with the wheel to the point where you mount the tire to it instead of to the rim, you should be close to current m

These motors are light. If you integrate them with the wheel to the point where you mount the tire to it instead of to the rim, you should be close to current mass, possibly breaking even (depending on how much of the axle/differential is unsprung mass, and how heavy the flexible torque transmission ends up being).