It is strange for me to see SAVA tires outside EX Yugoslavian countries.
It is Slovenian brand who was manufacturing tires form the 1950. First for Yugoslavian market and latter for easter europe (Poland, Czechoslovakia, Hungary, Bulgari...)
Later GoodYear bought it.
Eskimo S2 was good while new. After few years rubber compound get old and more turn to plastic than rubber aldo plenty of tread. Especially on R4 which is not heavy car and do not wear tires.
Eskimo S3 is much better and very common on roads in Slovenia, Croatia, Bosna and Hercegovina. Not know elsewhere in Europe.
Good on snow (especially bigger snow on the road) not so good on wet, tend to overstear if you are hard on throtle