The Poulsen wheel motors talk about "Added un-sprung weight, 38 lb per wheel" for 10 kW
If I were to go with a E-Wheel motor so far I like the PML more power per pound and they have regenerative braking.
There Hi-Pa wheel motor at 39pounds gives 40kW and 46pounds gives 80kW
http://www.pmlflightlink.com/motors/hipa_drive.html
or go lighter but loose the Regenerative braking in there DC wheel motors...
http://www.pmlflightlink.com/pdfs/eWheel.pdf
~2 HP per wheel for about ~9 pounds per wheel.... 4 of these would distribute the ~8HP and ~36 pounds over 4 wheels.
Although I still have my doubts about adding a bunch of unsprung weight ... and the durability of any motor in as harsh of an environment as a year round in wheel application.... that is the big issues for me... otherwise I love the idea of wheel motors.... maybe with the right suspension system it would work well.
