living in the canadian north we would take the chains for the 32's and add links to make them longer . we would usually put the chains on the front wheels because of the extra weight of the engine and the ability to steer with the traction of the front wheels.

 

The type of snow makes all the differance, elevation, temperature and the base layer. Somedays they work but the next day they may not.
Powder is fun... no need to chain up.

If the road becomes a frozen waterfall best dig in, it can be hours per mile but when the front sides over and you get sideways. You'll hope you have chains on before cause once your stuck...
You may not need chains but if you need them...

Remember; The turn around spots on narrow winter logging roads are far and few, monitor your radio, no fun backing down for 15 miles. Play safe