Does anyone have any info on whether or not go-jacks will work on 17x7 and 17x8 wheels?

they work on my corvettes 17" wheels (notice the primer silver vette)

http://garage.fasterdeals.com/garge21.jpg

bought mine here
http://www.gregsmithequipment.com/Move-It-Dollies-Ratchet-Style-Set-of-Four-p/htmdrs-4.htm
4 for $370

http://www.ntxtools.com/network-tool-warehouse/uni-5000.html

They will definitely work. I have used go jacks on my 17x12 rear wheels with 335/35/17s.

Thanks guys. I greatly appreciate the info and pic. I tweaked my back earlier this week moving my car to work on it. Fortunately not too bad, but just enough for me to consider down time at work versus safe and easy lifting equipment. Safety is cheap.