I've got a 16" OZ Racing wheel with tyre in DXF format but would ideally like a 17" running 225/45 tyres.

Measuring what I've got I can't work out what width and profile this drawing is of in order to adapt it to be closer to what I want to use.

It has a rolling radius of 300mm and the closest I can find would be 215/45 x 16 but measuring the drawing I can't seem to match those figures no matter where I measure.

I'm not a wheel/tyre expert though so only going on info I've read on this here --> clicky