The min recommended rim width is 9 inches. Is it a saftey issue or will they just look balooned out?
The tire will be a pair of MT ET Street radials. The other problem I am having is that I have not been able to find a 4 lug Cobra R wheel in 17x10

How much power are you going to be running through them? I think that it may cause both of the issues you described. IMO thats going to be a little wide, as compared to a Nitto which run little smaller...just my .02
I run Nitto 275/40/17's on an 8" wheel. M/T ET Street Radials 275/40/17's on a 9".
I just think they would look skinny. My other option is to go with these.. http://store.summitracing.com/partdetail.asp?part=TWG-830-7934C&FROM=MG
Does anyone have any experience with these? Will a 9 inch rim fit on the front of a lowered car?
They are just mean a-s-s looking tires...