Toyota FT-86 wheel bolt pattern - 5x100?

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Bo
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Toyota FT-86 wheel bolt pattern - 5x100?

Toyota FT-86 wheel bolt pattern - 5x100? I thought it could be calculated just by using bigger images, I`m not sure if I did the measurements correctly, but they seem logical. Here we go.
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The wheels on FT-86 images are R19

19in = 482.6 mm (according to Google :P)

According to Wikipedia: The wheel size is the diameter of the wheel in inches where the beads of the tire seat on the wheel.

Using the full size Toyota provided image of FT-86 concept, I tried to calculate pixels vs mm. So all calculations are related to this very image.

The bolt-pattern in pixels of the image is about 332px (measuring between bolt #1 and #3 in whatever order).

I tried to find the place where the beads of the tire seat on the wheel just by looking at the picture, so the calculations might be way off. So I measured approximate minimum and maximum diameter of the possible wheel inner side in pixels. About 1544px minimum and 1701 maximum

482.6 (mm) / 1544 (px) * 332 (px) = 103.7 (mm)

482.6 (mm) / 1701 (px) * 332 (px) = 103.7 (mm) = 94.2 (mm)

I took very extreme minimum and maximum possible measurements on the image, so the extreme bolt pattern range is 94.2 and 103.7
As Subaru and Toyota uses 5x100 mm in most cases and sometimes 5x114.3, we can guess that the bolt pattern should be 5x100!

I`d be happier for 5x114,3 (much more JDM forged wheel options)

Any comments? Did I do something wrong?

Bo
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So it was suggested to do the rumored Subaru 216a test mule @ Nurburgring measurements as well.

subaru test mule wheel bolt pattern measurements

Here are the wheel bolt pattern calculations. I have no idea what size this wheel is, but it looks more like R18 to me, or even R17? I did calculatiosn for all trhee. bolt measurements (px) 42.4-44.5
wheel measurements: 185-202

R19 wheel (482.6 mm)

115.3
116.0
105.6
106.3
MIN: 105.6, MAX: 115.3
AVG: 110.45

R18 wheel (18 in = 457.2 millimeters)

457.2/185*42.4 = 104.78
457.2/185*44.5 = 109.9
457.2/202*42.4 = 96
457.2/202*44.5 = 100.7
MIN: 96, MAX 109.9
AVG: 102.95 (mm)

R17 wheel (17. in = 431.8 millimeters)

431.8/185*42.4 = 99
431.8/185*44.5 = 103.9
431.8/202*42.4 = 90.6
431.8/202*44.5 = 95.1
MIN: 90.6, MAX: 103.9
AVG: 97.25 mm

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So if its R17 or R18, its closer to 5x100mm, but if its R19 wheel, then its closer to the 114.3.
Bo
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according to japanparts the STI wheels on test mule (if its really FT-86 test car) come in these sizes:

17 x 7.5
17 x 8
18 x 7.5
18 x 8
18 x 8.5

*the offsets vary by size.

thanks to TougeRenner!

So I guess the PCD on FT-86 concept and test mule is 100mm, bolt pattern 5x100