Other than reputation, I don't know the Mini but I personally don't find 16" wheels suitable for anything remotely off-road. I love my Bike Friday pakiT but the low wheels also means lower clearance. Maybe some very hard packed dirt might be okay but anything with ruts, rocks, or other obstructions would not be good. And sand or gravel is just unpleasant. Just my opinion. Tiny folders are great for multi modal riding and packing, but if you want to go off-road I would suggest at least a 20" wheel.