Hell if the warranty will replace it...go for it if time permits
Don't think you'll have any issues if you don't though
I've got one worst than that on one of my tires and I've been driving on it. As long as it's not a Duratrac you're probably fine, hahah.
if your just offroading it ide leave it, if tkaing on the highway, ide replace. if warrentied , ide replace regardless