Thank you for summarizing the data!CK wrote: ↑Fri Jul 09, 2021 1:37 pm According to FIA 2021 technical regulations (section 12), the diameter of the rim lip is 358 mm, approx. 14" (17.9 mm in 1/20). The outer diameter of wheel (tire) is 670 mm maximum for dry tires and 680 mm for wet tires. The maximum width of the wheel is between 370 mm and 385 mm for front wheel and 455 mm and 470 mm for rear wheel.
From Pirelli's website:
Green wet: front: 305/675-13, rear 405/675-13
Blue wet: front: 305/680-13, rear 405/680-13
The width specified is the tread width only.
So in 1/20, the dry tire diameter should be 33.5 mm. The front tire width is between 18.5 mm and 19.25 with tread width at 15.25 mm. The rear tire width is between 22.75 and 23.5 mm with tread width at 20.25 mm.
As always, you are mega and mega fast ...
I measured the tires again and everything is as described - well, not quite, I'm at 33.55mm