Twice needed chains on AWD Aerostar in Sierras
Before driving to Sugar Bowl, CA on 1/2, I purchased Type S clearance cables from Kragens for $30. I tried them on both front and rear tires in my dry driveway. They are Laclede brand size 1042. I had previously carried chains from 16" truck tires that I never needed or tested for fit. While you may not ever need chains on a highway in CA with 4WD, you may be asked if you have them and if not convincing, be asked to show them before being allowed to proceed. If you are stuck and don't have them, you can be fined.
Twice on my AWD Aerostar, I needed chains to proceed after getting stuck while trying to get to Sierra cabins. The first time, I tried crossing the berm the snowploy left to get into a cabin at South Lake Tahoe and high centered. The rear wheels were still on the street so I was able to jack them up and put on the chains and get unstuck. I left the chains on and that evening was able to go down a steep, icy hill that other 4WDs were sliding off.
The second time I had to chain my AWD Aerostar, I pulled to the edge of the road near a cabin in Tahoe Donner to let another vehicle pass. They had received 3 to 4 feet of snow in less than 24 hrs. and roads and driveways had not been cleared. I became stuck in the snow which was nearly to the top of my tires. After being pulled out by a passing truck, I chained up and my Aerostar was able to get in and pack down the snow in the cabin's driveway so my friend's Bronco could get in behind me.
The Aerostar only had anti-lock rear brakes so that is where I put my chains. I have driven front wheel drive vehicle with chains and didn't like the rough ride and steering or experiencing the back end trying to pass the front end when braking (without anti-lock). I would probably chain the rear of the Pilot depending on conditions.
Even with 4WD, the vehicle in the attached picture may need chains or a lot of shoveling to get on the road.