Question for the (Swedish) Goodyear experts!

Apart from the Goodyear Studded Suregrip 280/85x16 that came stock on the C3-series (and C2, and Sugga?), was there ever a size 9.00x16, and even 11.00x16?

If so, is it still in production?

If not, would there be some old new stock laying around somewhere on the planet?

Oh btw, does anyone in Scandinavia know a location/shop where they can perform aftermarket 'siping', cutting/slicing the solid blocks of such a massive offroad tire, to increase grip on wet/icy roads?

(plus decrease wear/heat/noise!)

It's a common service in the USA, with automatic cutting/slicing machines (not a hand-grooving tool!), and when I talked to one of the leading manufacturers of such machines 10 years ago, he told me they did sell some to Europe once, but only to Scandinavia.

Anyone know where?