Tire Circumference - Cateye EL135 Manual

Setting up the computer

Tire circumference

Tire circumference can be determined by either of the following two methods:
•
Measure the actual tire circumference (L)
After ensuring that the tire pressure is appropriate, sit on your
bike, roll it forward so that the tire makes one full revolution (use
the valve or other marking as a reference), and measure the dis-
tance traveled on the road.
•
Tire size chart
* The tire size or ETRTO code is indicated on the side of the tire.
ETRTO Tire size
40-254 14x1.50
47-254 14x1.75
40-305 16x1.50
47-305 16x1.75
54-305 16x2.00
28-349 16x1-1/8
37-349 16x1-3/8
32-369 17x1-1/4 (369)
40-355 18x1.50
47-355 18x1.75
32-406 20x1.25
35-406 20x1.35
40-406 20x1.50
47-406 20x1.75
50-406 20x1.95
28-451 20x1-1/8
37-451 20x1-3/8
37-501 22x1-3/8
40-501 22x1-1/2
47-507 24x1.75
50-507 24x2.00
54-507 24x2.125
25-520 24x1(520)
24x3/4 Tubular
28-540 24x1-1/8
32-540 24x1-1/4
25-559 26x1(559)
32-559 26x1.25
37-559 26x1.40
40-559 26x1.50
47-559 26x1.75
50-559 26x1.95
54-559 26x2.10
57-559 26x2.125
58-559 26x2.35
75-559 26x3.00
L (cm) ETRTO
28-590
102
37-590
106
119 37-584
120
20-571
125
23-571
129
130 25-571
134 40-590
40-584
134
25-630
135
145 28-630
146 32-630
37-630
149
40-584
152
157 50-584
54-584
155
57-584
162
18-622
177
179 19-622
20-622
189
23-622
193
197 25-622
175 28-622
30-622
179
32-622
180
191
191 35-622
38-622
195
40-622
201
201 42-622
202 44-622
45-622
205
47-622
207
207 54-622
208 56-622
60-622
217
7
L cm
Tire size L (cm)
26x1-1/8 197
26x1-3/8 207
26x1-1/2 210
650C Tubular 26x7/8 192
650x20C 194
650x23C 194
650x25C 26x1(571) 195
650x38A 213
650x38B 211
27x1(630) 215
27x1-1/8 216
27x1-1/4 216
27x1-3/8 217
27.5x1.50 208
27.5x1.95 209
27.5x2.1 215
27.5x2.25 218
700x18C 207
700x19C 208
700x20C 209
700x23C 210
700x25C 211
700x28C 214
700x30C 215
700x32C 216
700C Tubular 213
700x35C 217
700x38C 218
700x40C 220
700x42C 222
700x44C 224
700x45C 224
700x47C 227
29x2.1 229
29x2.2 230
29x2.3 233
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SET