Ah! My bad. I haven't had my coffee today yet.....shoulda noticed that the 8x6.5 was a lug pattern spec and not the OD/width spec.
FWIW --- this thread (and my mental mixup) caused me to go back down the interwebz rabbit holes to figure out what their actual specs are listed as (including backspacing.)
And --- I don't think these wheels are 8" wide.
They might measure 8" at their widest outboard surfaces, but in terms of standard wheel width measuring protocol (which is the maximum width measured INSIDE the tire-lip-mounting flange of the wheel) they are 7" wide --- just like the OEM E-series steel wheels.
From this thread (if it's correct):
4.25" back spacing
8 on 6.5 bolt pattern