World Bike Wheel Standards
Bike Rim Standards
Bicycle
Rim Size Chart
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Wheels/Rims | Information
Bike Wheel Sizing Sizes
INTERNATIONAL ADOPTED STANDARDS | 2012
 | Bicycle/Bike Wheel Size |
| Bicycle/Bike Wheel Standards |
Modern Larger Bike Wheels, Such As 26", 27" and 29" (inch), Are Used in bike races, road riding and mountain biking, because they can increase speed with less work than smaller wheels. Larger wheels also do better in turning corners because they have longer contact with the pavement and therefore hug the road better without slipping.
The 26" and 27" size are close in performance. Each has its advantages and disadvantages. What it really comes down to is the comfort of the rider on the bike. The 26" is generally used for shorter persons where as the 27" is generally used for taller persons. One advantage of the 26" is that with smaller size comes less weight and better acceleration. Riding at a constant speed, though, the two are equally good.
Smaller wheels such as the 8", 12", 16" and 20" are not as stable as larger wheels, but they allow for better maneuverability. Any combination of two sizes can increase control and/or speed. Small wheels and even small wheel-large wheel combinations have been shown to ride as well as a bike with larger wheels, but on paved terrain.
Bike Wheel Standards
|
|
Standards: Before tire and rim standards were set by
the European Tire and Rim Technical Organization (ETRTO)
and adopted c.1970 by the International Standards
Organization (ISO), manufacturers in different
countries produced their own tire and rim sizes.
Most tire
and rim sizes are nominal; this means their actual
measurements are within tolerance limits. The Bead Seat
Circumference (BSC), or Bead Seat Diameter (BSD) (where
the tire bead seats in the wheel rim), is the most
accurate measure. French Metric tires are measured by
diameter in millimeters, and by width in letters (A is
narrow 20mm, D is wide 50mm). An exception came with
narrow 700-size clincher tires designated as C.
Fractional Inches tire sizes usually fit wheels with
European straight-bead rims and British wired-on rims.
'Decimal Inches' tire sizes, usually fit America
hook-bead rims. Narrow width tires (18cm to 25cm or
1-1/4" to 7/8") usually fit hook-bead rims.
|
| Large Tire Sizes 28-inch to
26-inch:
| Rim Sizes:
Typical Bike Type:
|
|
ISO/ETRTO
Metric
|
French Metric
|
Decimal Inches
|
Fractional Inches
|
Bead Seat Circumference
|
Country Orig.
Rim specs:
|
| 32-647 |
700 |
-
|
28x1-1/4
|
2032
|
Britain EA2
Holland |
roadster
|
44-642
37-642 |
700A |
-
|
28x1-3/4
28x1-3/8
|
2016
|
Britain F5, EA4, E4 |
roadster
|
40-635
28-635 |
700B |
-
|
28x1-5/8
28x1-1/2 |
1994 |
Britain F10, F25.0, EA4 |
rod-brake roadster |
| 32-631
|
-
|
-
|
27x1-1/4
|
1982
|
Sweden |
road
|
32-630
28-630
20-630
|
-
|
-
|
27x1-3/8
27x1-1/4
27x1
|
1978
|
Britain K2, K25.0, EA25.0 |
touring, road
|
| 44-623
|
-
|
-
|
28x1-5/8
|
1958
|
Sweden
|
roadster
|
42-622
38-622
35-622
32-622
30-622
|
700C
|
-
|
28x1-3/4
|
1955
|
-
|
mountain
hybrid
Russian roadster
tandem
|
28-622
25-622
23-622
20-622
18-622
|
700C
|
-
|
28x1-3/8
28x1
|
1955
|
-
|
touring
road
time trial
track
|
| 40-609
|
650-32
|
-
|
27x1-1/2
|
1913
|
Germany
|
roadster
|
| 40-607
|
-
|
-
|
26x1-1/2
|
1906
|
America
|
roadster
|
35-599
32-599
|
-
|
26x1.375
26x1.25
|
-
|
1880
|
America
|
vintage lightweight
|
37-597
32-597
|
650
|
-
|
26x1-1/4x1-3/8
26x1-1/4
|
1876
|
America
Schwinn S-5, S-6
|
roadster, touring
Schwinn lightweight
|
40-590
37-590
|
650A
|
-
|
26x1-1/2
26x1-3/8
|
1854
|
Britain F.4, E.3, EA.3, E23.0, EA23.0, R23.0
|
roadster, road
|
| 40-583
|
700D
|
26x1.50
|
-
|
1845
|
-
|
touring
rare GT mtb
|
47-585
40-585
|
-
|
-
|
26x1-3/4
26x1-1/2
|
1837
|
Sweden
|
roadster
|
47-584
40-584
32-584
|
650B
|
-
|
26x1-5/8
26x1-1/2
26x1-3/8
|
1835
|
France
Schwinn S-4
Britain F9
|
touring, tandem
rare Raleigh, Schwinn mtb
|
| 47-571
|
650C
|
-
|
26x1-5/8
26x1-3/4
|
1794
|
America
Schwinn S-7
Britain F9
|
cruiser, Schwinn middleweight
|
23-571
20-571
|
650C
|
-
|
26x1
26x3/4
|
1794
|
-
|
time trial, triathlon, small road
|
| 62-561
|
-
|
-
|
26x2.25
25x1-3/8
|
1764
|
Sweden
|
roadster
|
57-559
54-559
50-559
47-559
40-559
38-559
32-559
28-559
25-599
|
650x45
|
26x2.125
26x2.0
26x1.90
26x1.75
26x1.60
26x1.50
26x1.40
26x1.25
26x1
|
-
|
1755
|
-
|
balloon cruiser, mountain
middleweight cruiser, atb
touring, tandem
road |
|
|
Small Tire Sizes 25-inch to
7-inch:
| Rim Sizes:
Bike Types:
|
| ISO-ETRTO metric
| French metric
| Decimal inches
| Fractional inches
| Bead Seat Circumf.
| Country Orig.
Rim specs:
|
37-547
32-547
|
-
|
-
|
24x1-3/8
24x1-1/4
|
1715
|
Schwinn
S-5, S-6
Britain K.1, E1, EA1
|
juvenile lightweight, Schwinn
|
37-541
32-541
|
600A
|
-
|
24x1-3/8
24x1
|
1700
|
Britain E.5
Holland
|
juvenile, small road, wheelchair
|
40-540
32-540
|
600x35A
|
-
|
24x1-3/8
24x1-1/2
|
1695
|
Britain E.5, F.3, EA21.0, F21.0, R21.0
|
juvenile roadster, small road, Raleigh
|
40-534
38-534
|
600B
|
-
|
24x1-1/2
|
1676
|
Britain F8
Holland
France
|
transport
|
| 37-533
|
-
|
-
|
26x1-1/2
|
-
|
Russia
|
small road, folding
|
| 40-531
|
-
|
-
|
24x1-1/2
|
1667
|
Sweden
|
small roadster
|
| 47-521
|
-
|
-
|
24x1-3/4
|
1635
|
America
Schwinn S-7
Britain
|
small cruiser
|
| 47-520
|
-
|
-
|
24x1-3/4
|
1633
|
America
|
juvenile roadster
|
20-520
25-520
|
-
|
-
|
24x1-1/8
24x1
|
1633
|
-
|
time trial, triathlon, small road, Terry
front
|
| 32-508
|
550x32
|
-
|
22x1-1/4
|
1595
|
Dutch
|
juvenile roadster
|
57-507
50-507
47-507
40-507
|
600x45
|
24x2.125
24x1.90
24x1.75
24x1.50
|
24x2x1-3/4
|
1592
|
Schwinn S-2
|
juvenile mtb, cruiser
|
| 50-503
|
-
|
-
|
24x2
|
1579
|
Sweden
|
transport
|
37-501
32-501
|
-
|
-
|
22x1-3/8
22x1-1/4
|
1575
|
Britain F.2, E.6, EA19.5
Italy 550x32A
|
juvenile roadster
|
| 37-498
|
-
|
-
|
22x1-3/8x1-1/4
|
1563
|
Germany
|
folding
|
| 37-490
|
550A
|
-
|
22x1-3/8A
|
1539
|
France
|
juvenile road, folding
|
| 37-489
|
-
|
-
|
22x1-3/8
|
1535
|
Italy 550A
Holland 550A
|
small-wheel roadster
|
| 44-484
|
550B
|
-
|
22x1-5/8x1-1/2
|
1520
|
France
|
transport
|
| 40-482
|
-
|
-
|
22x1-1/2
|
1515
|
Holland 550B
|
small-wheel roadster
|
| 47-470
|
550C
|
-
|
22x1-3/4
|
1475
|
France
|
juvenile roadster
|
57-457
44-457
|
-
|
22x2.125
22x1.75
|
-
|
1435
|
America
|
juvenile
|
37-451
32-451
28-451
|
-
|
-
|
20x1-3/8
20x1-1/4
20x1-1/8
|
1416
|
Schwinn S-5, S-6
Italy 500x35A
Britain E.5J, EA18.0, R18.0, EB18.0
|
juvenile lightweight, bmx racing, recumbent
|
| 32-445
|
-
|
-
|
20x1-1/4
|
-
|
-
|
juvenile
|
| -
|
-
|
20x1.375
20x1.25
|
-
|
-
|
America
|
juvenile middleweight
|
| 37-440
|
500A
|
-
|
20x1-3/8x1-1/4
|
1382
|
France
|
juvenile, folding
|
| 37-438
|
-
|
-
|
20x1-1/2
20x1-3/8
|
1375
|
Italy
Holland 500x35A
|
-
|
| 40-432
|
-
|
-
|
20x1-1/2
|
1356
|
Holland 500x38B
|
-
|
54-428
40-428
|
-
428x40
|
-
|
20x2
20x1-5/8x1-1/2
|
1345
|
Sweden
France
|
small-wheel roadster
|
| 47-419
|
-
|
-
|
20x1-3/4
|
1314
|
Schwinn S-7
|
juvenile, Schwinn
|
57-406
52-406
47-406
44-406
|
500x50
|
20x2.125
20x1.95
20x1.75
20x1.50
|
20x1-3/4
|
1274
|
France
Holland
America
|
bmx, juvenile, folding, Moulton APB,
recumbent, trailer
|
54-400
40-400
|
-
|
-
|
20x2
18x1-3/8
Italy 18x1-1/4
|
1257
|
Britain E.4J, F.4J
Italy 450x32A
|
small-wheel roadster, folding
|
40-390
37-390
|
450A
|
-
|
18x1-3/8
18x1-1/4
|
1225
|
France
|
juvenile
|
| 32-369
|
-
|
-
|
17x1-1/4
16x1-1/4
|
1169
|
Britain
|
Moulton AM, recumbent
|
54-355
47-355
44-355
|
450x45
|
18x2.125
18x1.75
18x1.50
|
-
|
1115
|
Germany
America
France
|
folding
juvenile
|
| 35-349
|
-
|
-
|
16x1-3/8
16x1-1/4
|
1097
|
Britain E.3J, EA14.0, EB14.0
Italy 400x32A
|
juvenile, folding, early Moulton
|
37-340
32-340
|
400A
|
-
|
16x1-1/2
16x1-3/8
|
1069
|
France
|
juvenile
|
| 37-337
|
-
|
-
|
16x1-3/8A
|
1058
|
-
|
folding Birdy
|
| 37-335
|
-
|
-
|
16x1-3/8
|
738
|
Poland
|
juvenile
|
| 44-317
|
-
|
-
|
16x1-3/4
|
996
|
Schwinn S-7
|
juvenile, Schwinn
|
54-305
44-305
|
-
|
16x2.125
16x1.75
|
-
|
957
|
America
|
juvenile, small bmx, folder, recumbent,
trailer
|
37-298
32-298
|
-
|
-
|
14x1-3/8
14x1-1/4
|
937
|
Britain E2J, F2J, EA11.7
Italy 350x32A
|
folding, juvenile
|
| 37-288
|
350A
|
-
|
-
|
-
|
French 350A
|
folding, juvenile
|
62-203
57-203
|
-
|
-
|
12-1/2x2
12-1/2x1.75
|
638
|
Italy
France
|
juvenile, scooters
|
44-194
32-194
|
-
|
-
|
10x1-5/8
10x1-1/4
|
609
|
-
Italy
|
juvenile
|
| 54-152
|
-
|
-
|
10x2
|
-
|
America
|
wheelchair
|
| 32-137
|
-
|
-
|
8x1-1/4
|
-
|
America
|
wheelchair
|
| 54-110
|
-
|
-
|
8x1-3/4
8x1-1/2
|
346
|
-
|
-
|
| 47-94
|
200x47
|
-
|
7x1-3/4
|
292
|
Germany
|
juvenile |
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