I have a set of 4 (four) Continental ProContact GX SSR 225/45 R18 95H Radial Tubeless Extra Load tires, used for 1 season. Excellent treads and quality of tires. Got rid of my 2017 Mercedes Benz C330 which had these tires on them, and returned the vehicle (leased) to the dealership with their factory tires. These tires served me well for one winter season.
Selling for $50 per tire. No rims included.
The exact tire is listed here on Tire Rack: https://www.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ProContact+GX+SSR