During snow storms, locations with steep terrain and narrow roads often mandate tire chains for non-4-wheel drive vehicles. Lawn and garden tractors are rear wheel drive for power in pulling and pushing.
Icy weather may require some added traction for your tractor to operate at peak performance levels. Throw tire chains on your tires so you don't worry about sliding.
When your tractor is slipping on icy or snowy terrain, you may want to add some weight to your mower. Wheel weights are applied to the rear tires and help weigh the back end of the tractor down so the tires grip better.
For the ultimate traction in harsh winter weather and especially on steep terrain, couple tire chains and wheel weights.