215/35R17 can be found - I did a google search before typing it in haha. Just that 205/40 may be just a bit too much stretch for some, but if you're happy with what you see in picture 2, then 205/40 will be fine for the 8.5". It's also a matter of whether the cops will defect you or not for them.
i have 205/40 on my front 8.5's and the stretch is not excesive, just nice, i doubt you'd get pinged for it
heres a link as to what the 205/40 will look on your 8.5 rim
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