The Suzi Q is designed to fit up to a 27.5” x 4.0” or 29” x 3.0” (carbon only). Keep in mind, there can be differences in tire widths between each tire manufacturer even if they are listed as the same size. We recommend checking the clearance before riding to ensure that you will not damage your frame. We recommend 6 mm of clearance between the tires and any frame members.