32c is a new size for the GP 4 Seasons. I haven't seen a retailer yet that has them, though.

I commuted for over a year with 25c 4 Seasons, and they were indeed great tires, especially in the wet. We don't get enough slick conditions around here for me to have tried them on ice. I don't think I would.

However I only got 4,000 miles out of them before my rear tire was done. I'm currently looking for replacements now that don't cost as much, since I originally got them from a friend at less than half the retail price.

But I can also tell you that the 4 Seasons in 25c measure 26mm actual width, mounted on Vuelta Corsa Lite rims with IIRC an inside width of 15mm between the hooked rim edges.