Tire Circumference Reference Table - Cateye CC-AT200W Quick Start Manual

CATEYE ADVENTURE
Quick Start Manual

Tire circumference reference table

ETRTO Tire size L (mm) ETRTO Tire size
47-203 12x1.75 935 40-406 20x1.50
54-203 12x1.95 940 47-406 20X1.75
40-254 14x1.50 1020 50-406 20x1.95
47-254 14x1.75 1055 28-451 20x1-1/8
40-305 16x1.50 1185 37-451 20x1-3/8
47-305 16x1.75 1195 37-501 22x1-3/8
54-305 16x2.00 1245 40-501 22x1-1/2
28-349 16x1-1/8 1290 47-507 24x1.75
37-349 16x1-3/8 1300 50-507 24x2.00
32-369 17x1-1/4 (369) 1340 54-507 24x2.125
40-355 18x1.50 1340 25-520 24x1 (520)
47-355 18x1.75 1350
32-406 20x1.25 1450 28-540 24x1-1/8
35-406 20x1.35 1460 32-540 24x1-1/4
Measure the tire circumference (L) of your bicycle
Adjust the tire pressure properly. With the rider's weight applied on the bicycle,
roll the wheel one tire revolution with reference to a marker such as the valve, and
measure the travel distance on the ground.
L (mm) ETRTO Tire size
1490 25-559 26x1 (559)
1515 32-559 26x1.25
1565 37-559 26x1.40
1545 40-559 26x1.50
1615 47-559 26x1.75
1770 50-559 26x1.95
1785 54-559 26x2.10
1890 57-559 26x2.125
1925 58-559 26x2.35
1965 75-559 26x3.00
1753 28-590 26x1-1/8
24x3/4 Tubular 1785 37-590 26x1-3/8
1795 37-584 26x1-1/2
1905 650C Tubular 26x7/8
L (mm) ETRTO Tire size
1913 20-571 650x20C
1950 23-571 650x23C
2005 25-571 650x25C 26x1 (571)
2010 40-590 650x38A
2023 40-584 650x38B
2050 25-630 27x1 (630)
2068 28-630 27x1-1/8
2070 32-630 27x1-1/4
2083 37-630 27x1-3/8
2170 18-622 700x18C
1970 19-622 700x19C
2068 20-622 700x20C
2100 23-622 700x23C
1920 25-622 700x25C
Return
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Setting up the computer
L (mm) ETRTO Tire size L (mm)
1938 28-622 700x28C
1944 30-622 700x30C
1952 32-622 700x32C
2125 700C Tubular
2105 35-622 700x35C
2145 38-622 700x38C
2155 40-622 700x40C
2161 42-622 700x42C
2169 44-622 700x44C
2070 45-622 700x45C
2080 47-622 700x47C
2086 54-622 29x2.1
2096 60-622 29x2.3
2105
L mm
2136
2146
2155
2130
2168
2180
2200
2224
2235
2242
2268
2288
2326