I made some DIY studded tyres. You need sufficient clearance for a fat tyre + studs + snow accumulation.
I picked a fairly cheap MTb tyre with large, well spaced knobbles. You are going to put a 3/8" self-tapping screw through every other knobble so bigger is better.
You need a dremel to cut the screw off on the outside at a suitable length and some ay of patching the head so it doesnt rub the inner tube. I glued on patches of old inner tube using rubber solution craft glue.
They wear out faster than commercial tyres such as Marathon Winter but the lifespan is good enough for me.
Having a spare set of wheels for your winter tyres is a great boon so you can switch out when you want. I have hub gears and dyno-hub so have to leave it till the last (cold) minute.