Beaded Edge Wheels
 Beaded edge tyres are kept
in place by reinforced rubber beads which are held by the rolled edges of the wheel rim.
They were used on early bicycles, many pre-1924 cars and most motorbikes until 1927.

European tyres were usually measured in millimetres whilst in
America they used inches.
The first table below gives details of the dimensions of beaded
edge wheel rims. The second table refers to the tyre sizes.
HIGH PRESSURE TYRES PRIOR TO 1928
Wheel Rim Sizes - dimensions in
millimetres: |
Tyre Size |
Outside
Diameter |
Inside
Diameter |
Overall
width |
Inside width |
| 26 x 3 |
540 |
506 |
63 |
44 |
| 30 x 3 |
639 |
605 |
63 |
44 |
| 28 x 3.5 |
565 |
528 |
75 |
51 |
| 30 x 3.5 |
616 |
579 |
74 |
51 |
| 32 x 3.5 |
672 |
631 |
75 |
51 |
| 550 x 65 |
446 |
414 |
58 |
39 |
| 650 x 65 |
536 |
506 |
58 |
39 |
| 710 x 90 |
548 |
511 |
74 |
51 |
| 760 x 90 |
592 |
555 |
74 |
51 |
| 810 x 90 |
646 |
609 |
74 |
51 |
| 756 x 105 |
596 |
553 |
88 |
62 |
| 815 x 105 |
649 |
606 |
88 |
62 |
| 875 x 105 |
712 |
671 |
88 |
62 |
| 820 x 120 |
609 |
561 |
98 |
67 |
| 880 x 120 |
672 |
625 |
98 |
67 |
| 920 x 120 |
711 |
663 |
98 |
67 |
| 835 x 135 |
609 |
559 |
109 |
77 |
| 895 x 135 |
634 |
585 |
109 |
77 |
| 935 x 135 |
684 |
635 |
109 |
77 |
| 855 x 155 |
579 |
519 |
127 |
90 |
| 955 x 155 |
677 |
617 |
127 |
90 |
| 1025 x 185 |
670 |
592 |
160 |
113 |
| 1085 x 185 |
771 |
693 |
160 |
113 |

HIGH PRESSURE TYRES PRIOR TO 1928
Tyre Sizes - dimensions in inches: |
Tyre Size |
Overall Diameter |
Inflated
Width |
Approved
Rim Width |
Max. Load lbs. |
Revs
per Mile |
| 26x3(700x80) |
27.25 |
3.25 |
1.75 |
440 |
779 |
| 710 x 90 |
28.30 |
3.60 |
2.00 |
650 |
750 |
| 760 x 90 |
30.30 |
3.60 |
2.00 |
650 |
707 |
| 810 x 90 |
32.30 |
3.60 |
2.00 |
650 |
657 |
| 815 x 105 |
33.00 |
4.10 |
2.45 |
900 |
643 |
| 875 x 105 |
35.50 |
4.10 |
2.45 |
900 |
597 |
| 820 x 120 |
32.20 |
4.65 |
2.64 |
1225 |
659 |
| 880 x 120 |
34.80 |
4.65 |
2.64 |
1225 |
610 |
| 895 x 135 |
35.00 |
5.25 |
3.03 |
1600 |
606 |
| 715 x 115 |
28.20 |
4.50 |
2.44 |
560 |
752 |
| 720 x 120 |
28.50 |
4.75 |
2.44 |
780 |
743 |
| 730 x 130 |
29.10 |
5.10 |
2.44 |
895 |
732 |
| 775 x 145 |
31.00 |
5.65 |
2.64 |
1120 |
684 |
| 30 x 3.5 |
31.00 |
3.65 |
2.00 |
750 |
684 |
| 30 x 3 |
30.60 |
3.15 |
1.75 |
600 |
693 |
| 36 x 4 |
36.10 |
4.20 |
2.50 |
1000 |
588 |
| 37 x 4 |
37.00 |
4.10 |
2.50 |
1000 |
573 |

LOW PRESSURE TYRES USED FROM 1925 TO 1928
Tyre Sizes - dimensions in millimetres: |
Tyre Size |
Outside
Diameter |
Inside
Diameter |
Overall
width |
Inside
width |
| 715 x 115 |
488 |
447 |
88 |
62 |
| 720 x 120 |
488 |
447 |
88 |
62 |
| 730 x 135 |
488 |
447 |
88 |
62 |
| 775 x 145 |
526 |
480 |
98 |
67 |
| 780 x 150 |
526 |
480 |
98 |
67 |
| 860 x 160 |
552 |
503 |
109 |
77 |
| 905 x 165 |
579 |
525 |
114 |
81 |

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