Hi Frank,
That’s mighty kind of you!
These are the parameters:
Font: Segoe UI (standard in Windows 10)
Font size: 3mm
Outer diameter of the wheel: 47mm
Tire diameter: 10 mm
The letters are positioned in the middle of tire wall.
The 'x' between the tire size numbers is 'floating' in the center-line of the font height.
I think a found a British firm that may provide the service:
https://modelshop.co.uk/I’m still looking for a company in the Netherlands that can provide the same service, to save on customs fees.
Thanks again Frank!
Willem