The best way is to take a (detail) belt sander to them. just be sure not to leave a flat spot when you do it.How do you get those rubber pointy things off the edge of the tires? I've tried side cutters, but they still leave a nub.
Not as long as you are careful about it. You don't need to take a lot off... just buff it enough to take the nibs off. We do it in the factory all the time when the vent sleaves slip in the molds. That is what the "nibs" are... vents in the mold to allow the air out so the rubber can flow and fill the cavities that form the tread and lettering on the tire. (when the sleave slips it leaves a BIG nib on the tire.. about 5* the size of a normal vent)That would make mobile rumble strips wouldn't it?