I just filled up the cans last night to see what it did for the weight. The cherokee already sorta leaned to the right, which I thought was mainly due to the carrier and tire on that side. After filling up the cans it sorta leveled out more, I'm hoping it will settle once I drive around a bit more, but neither effected handling in my case. The cans full with the additional rack etc, probably added close to 200 pounds on that side. As for seeing out the back window, I don't mind that much as I can barely see out it with my gear in the back anyways, plus I know how to use my mirrors.