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