how to size a bike

Road bike size is determined by your inseam (most important) and torso/arm length. Quick guide: 5’1”–5’5” = 49–52 cm frame; 5’5”–5’9” = 52–54 cm; 5’9”–6’0” = 54–56 cm; 6’0”–6’3” = 56–58 cm; 6’3”+ = 58–60+ cm. But brand sizing varies — Trek, Specialized, Giant, and Cannondale all use slightly different geometry. Always confirm by measuring … Read more