Best tires for a recumbent trike?

Sure I can! As they were only at 20" size and my rear wheel is bigger, I had plenty of grip on front end and few on the rear end. Riding corners "door first" was pretty regular, especially after rain or something, that decreased traction a bit more

 

My 2¢: Schwalbe Big Apple Tires. Done me good. Were recommended to me to soften my ride. Worked like a charm.

 

Reminds me of a flat I got while riding BRAT one year. After riding through a deluge, the sidewall gave out on my Continental Sport Contact. This was pretty common for that vintage/model, and I had a spare in my baggage; but as luck would have it the first SAG to stop was on a motorcycle and couldn't transport my 7-foot-long Nocom. While waiting for a van, I decided to empty the accumulated water from inside my frame. After that, people riding past saw the sag and the wet spot, which they thought was blood; and at camp that evening everyone stopped me to ask how I was.

It's funny how, when you ride a lowracer, everyone knows your first name by the end of the second day on tour. Trikes or standard 'bents not so much, but lowracer riders are like space aliens!

 

As even more of that white stuff have fallen everywhere, I swapped that tire that suppose to push me forward. In combination of total slick of Kojaks in the front end, it is really badass setup

 

So...
Rear wheel with SmartSam is a beast, can't complain about traction in a slightest.
Problem is front end.
Surprisingly not because of traction tho. Snow around here got a bit packed, so inch or two is laying on paths and it is in that semi-solid state of paste. My Kojaks can cut right through that and reach ground beneath, so no big issues with breaking or steering, but DRAG. As they are cutting through, there is a HUGE drag and my speed dropped to nonexistence (almost).
Problem is, that nothing bigger than 1,50in fits under my mudguards and I'm NOT taking those off for any price.

If you're going to ride at snow I recomend to get ready for that and go opposite way of good summer tires - go for big ones...