美式和法式 自行车轮胎标识 详细参数说明。英文的，
Size Markings（车胎标识）What do the various size markings on bicycle tires mean? Nowadays, bicycle tire sizes are all marked according to ETRTO (European Tire and Rim Technical Organization) European standard.However, older English and French tire size dimensions are still used as well.
The ETRTO size specification 37-622 indicates the width of 37 mm and the tire inner diameter of 622 mm. This dimension is clear and allows for precise classification of the rim size.
Inch Marking (e.g. 28 x 1.40) states the approximate outer diameter (28 inches) and the tire width (1.40 inches). Inch marking such as 28 x 1 5/8 x 1 3/8 (approximate outer diameter x tire height x tire width) is also common.
Inch sizes are not precise and lack accuracy. For example, diameters 559 mm (MTB), 571 mm (Triathlon) and 590 mm (Touring) are all classified as 26 inch. Tires with diameters 622 mm and 635 mm are both classified as 28-inch. Oddly enough, tires with an inner diameter of 630 mm are classified as 27-inch.
These classifications originate from the time of tire brakes. In those days, the exact outer diameter of the tire was defined by the brake. Depending on tire width, various standards for the inner diameter applied.
Inch dimensions are widely used in both MTB sport and English language countries. Therefore, we will continue to use these specifications for all tires. In the future, only inch decimal measurements will be used e.g. 26 x 2.25. Experience tells us that nowadays very few users are familiar with the classical fractional inch dimensions such as, 28 x 1 5/8 x 1 3/8.
When the 29 inch MTB tire size was introduced a few years ago it had the same inner diameter of 622mm, known as 28" in Europe.
French size markings (e.g. 700 x 35C) give the approximate tire outer diameter (700 mm) and width (35mm). The letter at the end indicates the inner diameter of the tire. In this case, C stands for 622 mm.
French size markings are not used for all tire sizes, so, for example, it is not used for MTB sizes.
http://www.schwalbetires.com/images/e_img_1144_1.jpg
Size Designations Overview
ETRTOInchFrench
Size designation37-62228 x 1.40"
28 x 1 5/8 x 1 3/8"700x35c
Outer diameter-Approx. 28"Approx. 700mm
Inner diameter622 mm--
Tire section widthApprox. 37 mmApprox. 1.40"
Approx. 1 3/8"Approx. 35 mm
Tire section height-Approx. 1 5/8"-
How many tire sizes are there? The following table shows all common tire sizes This table lists, where applicable, a corresponding ETRTO-size for virtually every tire size.
ETRTOInchFrench
7"47-937 x 1 3/4
8"47-9420 x 47-50 8 x 2
50-94200 x 50
54-1108 x 2 1/8 8 1/2 x 2
32-1378 x 1 1/4
10"54-152 44-19410 x 2 10 x 1 5/8
11"47-22211 x 13/4
12"47-20312 1/2 x 1.75 12 1/2 x 1.90
54-20312 x 1.95
57-20312 1/2 x 2 1/4 R
62-20312 1/2 x 2 1/4
32-23912 1/2 x 1 3/8 x 1 1/4300 x 32A
57-23912 1/2 x 2 1/4300 x 55A
14"57-25114 1/2 x 2 1/4300 x 55A
47-25414 x 1.75 14 x 1.90
40-27914 x 11/2350 x 38B
37-28814 x 1 5/8 x 1 3/8350A 350A 350A Confort 350A Ballon 350A 1/2Ballon 350 x 32A
40-28814 x 1 5/8350 x 38A
44-28814 x 1 5/8 x 1 3/8350A 350 x 42A
32-29814 x 1 1/4350A 350 x 32A
16"40-30516 x 1.50
47-30516 x 1.75 16 x 1.90
54-30516 x 1.95 16 x 2.00
57-30516 x 2.125
40-33016 x 1 1/2400 x 38B
28-340 400 x 30A
32-34016 x 1 3/8 x 1 1/4400A 400 x 32A
37-34016 x 1 3/8 x 1 1/4400 x 35A 400A Confort 400A Ballon 400A 1/2 Ballon
44-34016 x 1 5/8
28-34916 x 11/8
32-34916 x 11/4 NL
37-34916 x 1 3/8
17"32-35717 x 1 1/4
37-36917 x 1 1/4
18"28-35518 x 1 1/8
40-35518 x 1.50
47-35518 x 1.75 18 x 1.90
37-38718 x 1 3/8
40-38718 x 1 1/2
28-39018 x 1 1/8450 x 28A 450A
37-39018 x 1 3/8450 x 35A 450A 450A Confort 450A Ballon 450A 1/2Ballon
55-390 450 x 55A
57-390 450 x 55A 450A
37-40018 x 1 3/8
20"54-40020 x 2 x 1 3/4 20 x 2F4J
28-40620 x 1 1/8
32-40620 x 1.25
35-40620 x 1.35
37-40620 x 1 3/8
40-40620 x 1.50
44-40620 x 1.625
47-40620 x 1.75 20 x 1.90
50-40620 x 2.00
54-40620 x 2.00
57-40620 x 2.125
54-42820 x 2.00
40-43220 x 1 1/2
37-43820 x 1 3/8500A
40-43820 x 1 3/8500 x 38A
28-440 500 x 28A 500A 500A Standard
40-44020 x 1 1/2NL500 x 38A
28-45120 x 1 1/8
37-45120 x 1 3/8 B.S.
22"44-48422 x 15/8 x 11/2
25-48922 x 1.00
37-48922 x 1 3/8 NL
40-48922 x 1 3/8 x 1 1/2
50-48922 x 2.00
28-490 550 x 28A 550A 550A Standard
32-49022 x 1 3/8 x 1 1/4550 x 32A 550A
37-49022 x 13/8550 x 35A 550A Confort 550A Ballon 550A 1/2 Ballon
37-49822 x 1 3/8 x 1 1/4
32-50122 x 1 1/4
37-50122 x 1 3/8
24"40-50724 x 1.50
44-50724 x 1.625 24 x 1.75
47-50724 x 1.75 24 x 1.85/1.90
49-50724 x 1.85
50-50724 x 1.90/2.00 24 x 2.00 24 x 2.125
54-50724 x 2.10
57-50724 x 2.125 24 x 2.00
60-50724 x 2.35
44-53124 x 1 5/8 x 1 1/2
40-53424 x 1 1/2
25-54024 x 1.00
32-54024 x 1 3/8 x 1 1/4 24 x 1 3/8
37-54024 x 1 3/8
40-54024 x 1 3/8 x 1 1/2
22-541
25-541 600 x 25A
28-541 600 x 28A 600A 600A Standard
32-54124 x 1 3/8 x 1 1/4 N4600 x 32A
37-541 600 x 35A 600A Confort 600A Ballon 600A 1/2 Ballon
26"25-55926 x 1.00
35-55926 x 1.35
37-55926 x 1 5/8 x 1 3/8 26 x 1.40
40-55926 x 1.50
44-55926 x 1.625 26 x 1.50/1.75
47-55926 x 1.75 26 x 1.85/1.90
50-55926 x 1.90 26 x 1.95 26 x 1.90/2.00 26 x 2.00/2.10
54-55926 x 1.95 26 x 2.10 26 x 2.125
57-55926 x 2.125 26 x 2.20/2.25
60-55926 x 2.35
62-55926 x 2.50
20-57126 x 3/4650 x 20C
23-57126 x 7/8650 x 22C
40-57126 x 1 1/2 CS 26 x 1 3/8 x 1 1/2 NL 26 x 1 5/8 x 1 1/2 650 x 35C 650 x 38C
47-57126 x 1 3/4 650 CS confort650 x 45C
54-57126 x 2 x 1 3/4650 x 50C
28-58426 x 1 1/8 x 1 1/2650 x 28B
32-584 650 x 32B
35-58426 x 1 3/8 x 1 1/2650 x 35B 650B Standard
37-58426 x 1 1/2 x 1 3/8 26 x 1 1/2650 x 35B
40-58426 x 1 5/8 x 1 1/2650 x 42B 650B Semi-Confort 650B 1/2 Ballon
20-590 650 x 20A
25-59026 x 1 1/8, 1 1/4 26 x 1 3/8 - 1 1/4650 x 32A
28-59026 x 1 1/8650 x 28A
32-59026 x 1 1/4 26 x 1 3/8 x1 1/4650 x 32A
35-59026 x 1 3/8650 x 35A
37-59026 x 1 3/8650 x 35A 650A
40-59026 x 1.50 28 x 1 3/8 x 1 1/2650 x 38A
44-590
32-59726 x 1 1/4
27"40-60927 x 1 1/2
20-63027 x 3/4
22-63027 x 7/8
25-63027 x 1.00 27 x 1 1/16
28-63027 x 1 1/8 27 x 1 1/4 Fifty 27 x 1 1/4
32-63027 x 1 1/4
28/32-63027 x 1 1/4
35-63027 x 1 3/8
28"18-62228 x 3/4700 x 18C
19-622 700 x 19C
20-62228 x 3/4700 x 20C
22-62228 x 7/8700 x 22C
23-62228 x 7/8700 x 23C
25-62228 x 1.00, 1 1/16700 x 25C
30-62228 x 1.20700 x 28C
28-62228 x 1 5/8 x 1 1/8700 x 30C
32-62228 x 15/8 x 11/4700 x 32C 700C COURSE
35-62228 x 15/8 x 13/8700 x 35C
37-62228 x 1 5/8 x 1 3/8700 x 35C
40-62228 x 1.50 28 x 1 5/8 x 1 1/2700 x 38C
42-62228 x 1.60700 x 40C
44-62228 x 1.625700 x 42C
47-62228 x 1.75700 x 45C
50-62228 x 1.90 28 x 2.00
60-62228 x 2.35
32-63528 x 1 1/2 x 1 1/8770 x 28B 700 x 28B 770B COURSE
40-63528 x 1 1/2 28 x 1 1/2 x 1 3/8700 x 38B 700 x 35B 700 Standard 700B Standard
44-63528 x 15/8 x 11/2700 x 40/42B
28-64228 x 1 3/8 x 1 1/8700 x 28A
37-64228 x 1 3/8700 x 35A
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