Tyre size chart

If you want to find the right tyres for your bike, you should know the wheel diameter and width of your tyre. In case of any doubt what size you need, you can always use the size existing on your current tyre as a guide.

There are various size designations which you can find on the sidewall of the tyre. To make everything as simple as possible, we've show the tables below with the most popular size designations. You can check your size and easily convert it to any other size designation.

SIZES OF TYRES FOR MOUNTAIN BIKES

Type of bicycle & wheel size in the store

 

Inches

 

 

 

 ETRTO

 

 Alternative name

 

diametr

 

width in inches

 

width in mm

 

diametr

 

MTB 20“

20

x

1,9 - 2,25

 

47 to 57

-

406

-

MTB 24“

24

x

1,75 - 2,4

 

47 to 63

-

507

-

MTB 26“

26

x

1,5 - 2,6

 

40 to 65

-

559

-

MTB FAT

26

x

3,8 - 4,8

 

95 to 120

-

559

-

MTB 27,5“

27,5

x

1,9 - 2,5

 

48 to 64

-

584

650B

MTB 27,5+ /B+

27,5

x

2,8 - 3,2

 

67 to 79

-

584

B+

MTB 29“

29

x

1,9 - 2,4

 

47 to 63

-

622

-

SIZE OF TYRES FOR ROAD, TRIATHLONE AND CROSS BIKES

Type of bicycle & wheel size in the store

 

Inches

 

 

 

ETRTO

 

Alternative name

 

diametr

 

width in inches

 

width in mm

 

diametr

 

Road and triathlon ones 28

28

x

¾ - 1 1/8

 

18 to 28

-

622

700x18C to 700x28C

CX & Gravel 28

28

x

1 – 1,6

 

28 to 42

-

622

700x28C to 700x42C

Road Plus

27,5

x

1,5 - 2,6

 

35 to 47

-

584

650B

Tria 26“ (old)

26

x

1

 

18 to 23

-

551

650 x 18C to 650 x 23C

 SIZE OF TYRES FOR TREKKING AND CITY BICYCLES

Type of bicycle & wheel size in the store

 

Inches

 

 

 

ETRTO

 

Alternatywna
nazwa

 

diametr

 

width in inches

 

width in mm

 

diametr

 

Trekking/city 12“

12

x

1,75 - 2,25

 

47 to 62

-

203

12 ½ x 1,75 to 12 ½ x 2 ¼

Trekkingowymiejski 14“

14

x

1,5 - 1,75

 

38 to 47

-

288

14 x 1 5/8 x 1 3/8 or 350 x 38A, 350 x 42A

Trekking/city 16“

16

x

1,5 - 2,1

 

40 to 57

-

305

-

Trekking/city 18“

18

x

1,25 - 2,0

 

32 to 50

-

355

-

Trekking/city 20“

20

x

0,9 - 2,25

 

23 to 57

-

406

-

Trekking/city 24“

24

x

1,5 - 2,4

 

40 to 62

-

507

-

Trekking/city 26“

26

x

1,0 - 2,5

 

25 to 64

-

559

-

Trekking/city 27,5“

27,5

x

1,125 - 2,5

 

28 to 57

-

584

650 x 28B to 650 x 42B

Trekking/city 28“

28

x

1 - 1,6

 

28 to 42

-

622

700x28C to 700x42C

Trekking/city 29“

29

x

1,9 - 2,4

 

47 to 63

-

622

-

Trekking/city 27“ (old not used standards)

27

x

7/8 – 1/14

 

22 to 32

-

630

27 x 7/8 to 27 x 1 ¼

 

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