Destroyer averaged 23.02mm across 5 discs, all star. I've read that the Nuke is 25mm but have not confirmed it myself.
In general Innova drivers seem to fall into 7 speed categories:
- 7 speed, 16.3mm - Gazelle/Leopard(3)
- 8 speed, 17.5mm(+1.2mm) - TL(3)/Teebird(3)
- 9 speed, 19.1mm(+1.6mm) - Thunderbird/Firebird/Valkyrie
- 10 speed, 20.4mm(+1.3mm) - Beast
- 11 speed, 21.7mm(+1.3mm) - Wraith
- 12 speed, 23.0mm(+1.3mm) - Destroyer/PD2/XCal
- 13 speed, 24.0mm(+1.0mm) - Boss/Corvette
I'm not comfortable classifying non-drivers the same way due to variability in rim shape, depth, diameter and inside rim shape.
There also seems to be a trend that the harder/more durable/more overstable the plastic, the thicker the rim. Which I'm sure tons of people could've told you. For example the biggest within-mold difference I found was DX Teebird3s measuring 17.33mm and MF Teebird3s measuring 17.68mm.
Keep in mind that the biggest variation between two measurements of the same exact disc is 0.35mm or about 2%, which might give an indication of measurement error.
On topic: I feel like controllability and reliability in manufacturing may go down the faster the disc gets and people arbitrarily picked 12 speed as the point where they go "discs faster than this are too uncontrollable/unreliable"(probably because Destroyers are good)
. I imagine if maximum allowed rim width was 28mm and we had 16-17 speed discs that a lot more people would be throwing Katanas and other 24mm discs.