Honestly, when I go to SC, I hate bringing anything with 23c tires (like on my speedy fixed) becuase the roads alternate from perfect and smooth, to nasty, decaying, potholed and gravelly; however, SC is mostly flat, and the parts that arent flat are actually kinda fun to climb on a fixed (Laurel/California St area, the hills East of Ocean St, or the mountains outside town). I simply suggest some fat tires (28s or so, and slight tread is nice).