I see we were typing at the same time!
Yes the Dunny 55 will be fine - see below for rim and load data chart. OEM is 6" rim width.
OEM 200/50ZR17 Dunlop D220
. Tire Width: 7.64"
. Tire Diameter: 25.00"
. Tread Depth: 8/32
. Rim Range: 6" recommended
. Capacity: 853#
. Weight of Tire: not listed
Wheel - Rear - OEM: Cast Aluminum 17MCxMT6.00 (17" x 6")
I don't have the Metz 210mm dimensions handy for overall width but for your specific question in this post it won't matter anyway.
If what you are looking at is the Shinko R005 its a marginal tire but its cheap. The 55 should be a bit narrower than the 50 series and a bit taller. It should fit if your rear suspension is OEM height, but I couldn't find Shinko dimensions to verify rim size etc. If you mount it yourself then you don't have to factor install$ into your overall cost-per-tire.