Stud tires

Slid off the road on snow into a ditch today in Canada.
I had only studded the back tires because the toyota garage didn't think their was enough tread on the front, this made the vehicle grip more on the back and i wasn't use to driving on the icy roads with studs and when i turns right on a bend i flew off into a deep ditch. I was amazed that i manages to drive out of the ditch on the other side as it wasn't fenced so i drove over some fields at the back of a local church.
I have since been to a local tyre company called kaltire and they have re drilled new holes and have managed to stud up the front tires so now i have excellent grip all round.