First set of tires on my road bike was 23 mm Conti 4Season, wore out the rear. Put on a 25 mm 4Season, liked the ride better. When the front 23 was worn, replaced it with a 25. Then, when 25 rear needed replacement - the shop only had a 28 4Season. The 28 actually did fit. 25 F and 28 R is working well, ride comfy, handling and speed good- tires wear at about equally.