Hard decision.. I would think tires..but without the jet kit and pipe, you can not spin them as you would want..although..you can not go in deep water without a snorkle... Get my drift ??? What are you wanting to do..Race, Water, Mud...ect........
yep.I'd buy a winch, then the tires and jetting... You can go alot of places and push the envelope but still get outta trouble with the winch. Then when you push it too hard and puncture a tire, then you can upgrade the tires.