I have a 27" wheeled bike. Largest tire width I found is a 27 x 1 3/8 cyclo cross , knobby, tire ...no studs. Switch to 700c will give more options. What tire is best depends on your conditions. Spec your routes, then select the lowest rolling resistant tire. The Knokian A10 (700c x 32mm) and Schwalbe Marathon Winters (700c x 35mm) have smoother tread designs with studs and probably would fit your bike. Check your clearances though.