Contemplating four aluminum wheels for my 2000 E250 and curious what bolt circle and back spacing would be considered stock? I do know my current steel wheels are 16 diameter x 7 width--no idea what the lug circle is though.
Won't be running anything bigger than an LT245 or LT265.
The bolt circle is 8-165. This is different from the F-Series truck's 8-170 so don't be lured into a great deal on a set of truck wheels because they will not fit.
As for backspacing, I don't know what the factory specs are, but many of the aftermarket wheels for the E-Series tend to be in the 4 - 4 1/4" neighborhood. To determine the stock backspacing, hold a straight edge across the rim and measure back to the mounting flange. I'd measure my spare for you, but I don't feel like rolling around in the snow/ice to figure it out.