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Check the sidewall of your current tire; the numbers indicate tire size (rim size and width)
A tire size of 29 x 2.3 has a 29 in. rim size and a 2.3 in. width
While the tire diameter must be an exact match with your rim size, you can opt for variations in tire widths though you should consider the min/max widths of the rim
Tire Type
Tubeless ready: These tires seal directly on rim of a bike and don’t require a separate inner tube
Tubeless clincher: This common tire setup includes a tire and a separate inner tube
Tubular: Less common, the inner tube is sewn inside the casing and glued or taped onto the rim
Bead type
Wired: The bead—or the edge of the tire that fits into a rim—is made of steel wire so can’t be folded; generally cheaper and heavier
Folding: These have a flexible Kevlar bead; they can be folded up, making storing and carrying easy
