The Toyo Proxes FZ4s and the Toyo Proxes 4 are all season tires with a little light snow traction. I have the 4s on my 00 Civic Si and I am actually pretty impressed with them. Haven't driven through snow yet.
But the ES100s are a summer only tire just to give you reference. That means they should be grippier in the summer, but of course will suck in the winter.
__________________
Sponsored by: KAM Racing Sports, Falken Tires, Progress Technology, Brady's High Performance, Taggart Performance Engineering, Rotora Brakes
Autocross is: 90% driver, 5% car, & 5%
CRAZY MOJO!
Autocross Help Page