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Tire Size Chart

To get accurate results from a speed sensor like the Wahoo RPM Speed or Blue SC, input your wheel circumference in the Wahoo Fitness App. An accurate speed sensor can also improve the accuracy of GPS Bike Computers like the ELEMNT, ELEMNT ROAM, and ELEMNT BOLT, especially in tree cover or near buildings.

 

You can find tire size on the side of your tires. Tire circumference may vary depending on tire pressure. Properly inflate your tires for the most accurate results.

 

Please see Setting Up Wheel Circumference for detailed instructions and additional information.

 

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

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