If the tread is directional make sure that the tire place mounted them correctly . If any of them are mounted backwards and they are designed to channel water they will be much less effective . You would think tire places would understand directional tires , but in my experience they don ' t get it right without you standing over them . <| sep |> That ' s fine then , but the question becomes what do you do with the climate science division of NASA . Do you simply scrap it like Trump seems to favor , or do you transfer it to NOAA . The problem I have with Trump is that he ' s not taking this position because he doesn ' t think it ' s part of NASA ' s mission , he ' s taking this position because he ' s hostile to climate science .