Hankook Dynapro HT’s I believe....
My 2018 Exp Max Ltd/302a came with 22" rims wrapped in Hankook Dynapro HTs. They are just about the worst OEM tire for anything other than dry pavement that I've encountered on ANY vehicle...they are dangerous. I did have the displeasure of having the OEM combo. on in late March (were headed to FL so swapped earlier than normal from my winter set-up) and we had a couple inches of typical midwestern snow (fairly heavy/plenty of ice); I was taken aback at just how poor the Expy handled the snow (tread depth was around 1/2) even in snow/sand mode. Just re-emphasized to me just how important the right tire is for safe travel. I'll ditch the Hankooks as soon as the budget allows and move to Contis or Pirelli (
see Tire Rack comparo for info.) for non-winter driving.
Because I spend a fair amount of time driving to Colorado from Chicagoland in the winter (snow skiing in Summit Co.) I purchased 18" aftermarket rims and Blizzak DM-V2 snow tires prior to my first winter with the Expy. They have been phenomenal in ALL conditions including several interstate trips in white-out conditions/road closures soon after we passed, 12-15" of overnight snow in the mountains, etc. I would definitely recommend the set-up.
Elsewhere in this thread it was suggested A/T tires as a solution for winter traction. Generally that is a less than optimal decision even if they have the three mountain snow rating,
see here for details. If you spend most of your time on-road and you are in a northern climate which gets significant snow/ice/etc. you are best served with a dedicated snow/winter tire.
Lastly it should go without say buuuttttttt.....no tire can overcome the physics of traveling at too high a rate of speed for given traction conditions....slow down in the white stuff/ice and arrive safely!