2019 car thread in Miscellaneous Discussions Posted Wednesday at 09:01 PM · Report reply 39 minutes ago, SkiingInABlueDream said: What I'm saying is that any 4wd system that uses a transfer case shouldn't be driven on dry pavement. The reason is the transfer case isn't a differential; it can't handle speed differences between the front and rear axles. I'm assuming the Wrangler would have a transfer case 4wd system and the Subaru will have some AWD system that IS dry pavement friendly. This is an important difference. A transfer case system would be fine on slippery/snow covered roads, but I wouldnt assume roads would remain snowy for an entire day trip. If you find dry pavement you have to remember to switch the system out of 4wd mode. With a Subaru you don't have to think about any of that stuff. Yeah, so Jeep offers three different 4x4 systems. It depends how that specific vehicle was optioned. An open question. For example, my Silverado has a transfer case system that can also operate in automatic mode. So I have 2-High, Auto, 4-High, 4-Low. And the rear differential is automatic locking too, not just limited slip. But that auto locking rear diff is not standard either. Really depends on how much you are willing to spend.