In the process of getting new tires and have some questions on sizing. I live in an area where if roads have pot holes less than 3" deep its considered "smooth" so I want a taller sidewall. I have heard people running 255/40r19 on the stock rears without a problem. Has anyone run 245/40/19? Also, I am considering the 245s for a bit of weight savings as well; plus the installers here sell the 245s for around $60 less/tire than the 255s for the kumho ecsta 4x -- and as a med student money is hard to come by.