You guys crack me up..
For daily driving on snow.. Don't worry about it... Driving just below the speed limit on snow days where the snow is actually covering the roads all the way to 2 feet of snow is fine.. Don't lower the psi on your tires unless you want to fly off the road.
If your driving offroad, then yes lower the psi and drive slower.
But with normal everyday driving, your nuts to lower the psi and drive close to the suggested speed limit.
Narrower tires due much better in light to deep snow, ice (on paved or dirt roads at close to normal speeds) Your tires will act like the paddle on the back of a canoe when dragged in the water.. when you turn it will steer the entire jeep in the direction.
When driving on snow...regardless of the braking system... tap the pedal repeatedly to slow down faster and under control. The system does take over for you when you slam on the pedal and does the same thing.. But with these jeeps and how people drive, you'll lose control and end up starting to slide sideways..
If your sliding sideways and have quite a bit of room...hit the gas slightly to gain control with your steering and traction. Then after you've pointed your rig in the right direction start to brake ... Just don't slam the brake pedal to the floor and expect to stop in the direction you are going.
Plus reach down and pull the handle by your right foot and engage 4 wheel drive.. You don't have to stop and pull the handle.... I've done it at 40 mph. These rigs have changed over the years and are made to do just such a thing.
I only speak from 31 years of experience living in Alaska. And yes I've created my own lane with stock size tires, 91' full size single Cab pickup while in 4 wheel drive, when the snow was past my front bumper... Snow is lighter on the top then it is on the bottom. If your down South the snow tends to be wetter, which means the snow settles quicker and its denser at the top (then it would probably cave in your grille)
Washington gets all its snow in the mountains... Snow hasn't hit Seattle this season at all.. You don't have to worry to much about that.. Hell it snows in the mountains and then just rains right behind it.
Snow is easy to drive in. Sense your not used to driving in it, when you get here.. Don't freak out, just go up in the mountains and practice driving in it in the parking lots and side roads.. Get use to it. Don't let it surprise you and you not know how to drive on it.
I once saw my mother with a 70's VW Rabbit, with stock tires, go all the way up a one mile 3 foot snow covered mountain road to our house.. Don't say it can't be done...cause Alaskan's have been doing it for years in Subaru's and VW's. Momentum is the key.
And go prepared, food/water, Shovel, snow pants, gloves, hat, jacket, blanket if you have to sleep in your jeep. Even if your driving around town in a snow storm.