Yep, unless you have tubeless wheels, you're going to run tubes in those tubeless radial tires you have. These are the ticket for most supermoto tire sizes. If you have a 16.5 front, run the 17- you'll be fine. Our tubes are specifically selected to provide the quickest warm-up times for your slicks or DOT tires while adding as little weight as possible. [recommended by Motostrano] Suitable for rear wheels 4.25 and 5.00. Fronts good for 17 and 16.5