Anyone who rides without studded tyres in the winter is stupid and is begging to be retired from the gene pool.

So, best thing is to ride with studded tyres in the winter.

Second best is, just don't ride if you're too stupid to put some studded tires on those wheels.

Worst is to continue riding on ice and snow without studded tyres, thinking you're somehow superman and you won't slip. You will, and you'll slip at the worst possible time, thanks to Murphy.