4 Winter tyres for sale 195/65 R15 91 T - Munich

I've got 4 Good Year Ulrtragrip 6 winter tyres on steel rims for sale.
There are 4 mm of profile left. So they shold be good for one winter.
The rims are rusty but still usable. The rims were fitted on a W203 Mercedes. Probably will fit other cars, but I have no clue.

Pick-Up in Munich-Sendling or Murnau.

All four go for 10 EUR.

I would be interested - what is the recommendation for min tread on these tyres?

I can pass by if and when suits to see if they fit/buy

Many thanks