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Tire Size Chart

Tire Size Circumference in Meters Circumference in mm
ISO
700 x 18C 2.07 2070 18-622
700 x 19C 2.08 2080 19-622
700 x 20C 2.086 2086 20-622
700 x 23C 2.096 2096 23-622
700 x 25C 2.105 2105 25-622
700C Tubular 2.13 2130  
700 x 28C 2.136 2136 28-622
700 x 30C 2.146 2146 30-622
700 x 32C 2.155 2155 32-622
700 x 35C 2.168 2168 35-622
700 x 38C 2.18 2180 38-622
700 x 40C 2.2 2200 40-622
700 x 44C 2.235 2235 44-622
700 x 45C 2.242 2242 45-622
700 x 47C 2.268 2268 47-622
650 x 20C 1.938 1938 20-571
650 x 23C 1.944 1944 23-571
650 x 35A 2.09 2090 37-590
650 x 38B 2.105 2105 40-584
650 x 38A 2.125 2125 40-590
12" x 1.75" 0.935 0935 47-203
12" x 1.95" 0.94 0940 54-203
14" x 1.50" 1.02 1020 40-254
14" x 1.75" 1.055 1055 47-254
16" x 1.50" 1.185 1185 40-305
16" x 1.75" 1.195 1195 47-305
16" x 2.00" 1.245 1245 54-305
16" x 1-1/8" 1.29 1290 28-349
16" x 1-3/8" 1.3 1300 37-349
18" x 1.50" 1.34 1340 40-355
18" x 1.75" 1.35 1350 47-355
20" x 1.25" 1.45 1450 32-406
20" x 1.35" 1.46 1460 35-406
20" x 1.50" 1.49 1490 40-406
20" x 1.75" 1.515 1515 47-406
20" x 1.95" 1.565 1565 50-406
20" x 1-1/8" 1.545 1545 28-451
20" x 1-3/8" 1.615 1615 37-451
22" x 1-3/8" 1.77 1770 37-501
22" x 1-1/2" 1.785 1785 40-501
24" x 3/4" Tubular 1.785 1785  
24" x 1" 1.753 1753 25-520
24" x 1-1/8" 1.795 1795 28-540
24" x 1-1/4" 1.905 1905 32-540
24" x 1.75" 1.89 1890 47-507
24" x 2.00" 1.925 1925 50-507
24" x 2.125" 1.965 1965 54-507
26" x 7/8" Tubular 1.92 1920  
26" x 1.25" 1.95 1950 32-559
26" x 1.40" 2.005 2005 37-559
26" x 1.50" 2.01 2010 40-559
26" x 1.75" 2.023 2023 47-559
26" x 1.95" 2.05 2050 50-559
26" x 2.00" 2.055 2055 52-559
26" x 2.1" 2.068 2068 54-559
26" x 2.125" 2.07 2070 57-559
26" x 2.35" 2.083 2083 58-559
26" x 3.00" 2.17 2170 75-559
26" x 1-1.0" 1.913 1913 25-559
26" x 1" 1.952 1952 25-571
26" x 1-1/8" 1.97 1970 28-590
26" x 1-3/8" 2.068 2068 37-590
26" x 1-1/2" 2.1 2100 37-584
27" x 1" 2.145 2145 25-630
27" x 1-1/8" 2.155 2155 28-630
27" x 1-1/4" 2.161 2161 32-630
27" x 1-3/8" 2.169 2169 37-630
27.5" x 1.50" 2.079 2079 40-584
27.5" x 1.95" 2.09 2090 50-584
27.5" x 2.10" 2.148 2148 54-584
27.5" x 2.25" 2.182 2182 57-584
29" x 2.25" 2.281 2281 58-622
29" x 2.1" 2.288 2288 54-622
29" x 2.2" 2.298 2298 56-622
29" x 2.3" 2.326 2326 60-622