This tile has a beveled edge that, when two tiles are next to each other, create a perfect grout line! If you wanted a wide grout line, definitely use spaces. Spacers are more handy when tile has a “hard” edge rather than a beveled. if you put two “hard edge” tiles new to each other, they wouldn’t have a ground line and if you space without spacers, its unlikely you’d get equal grout lines for your entire project.