They needed to do it. Ranger has been steadily adding weight with every version and this model has been getting slower each time. This latest version gained a couple inches but also a few more pounds. I spoke with a dealer a few years back asking why they wouldn't bump the rating to 175, which is commensurate with their older 18' boats and he said, "it would kill the Comanche sales". I am inclined to believe him considering the Z519C's are just not that numerous.