I would re-route the vent lines, there are 2 carb vents, fan vent, rear brake, front and rear diff vent. This will help keep them dry so that you don't get any water into them. also if you plan to ridein moderate water I would also plug the carb drain so that water doesn't come back up. About the tires, no opinion yet, i still havent' upgraded tires yet they are coming shortly. Hope that helps.