Tyre Markings
| ① | Manufacturer | |
| 14.9 | Section width of the tyre in inches | |
| ② | R | Radial tyre (for bias-ply tyres: “–”) |
| 28 | Rim diameter in inches | |
| ③ | Tube Type | Also abbreviated as TT, tyre to be used with an inner tube |
| ④ | 128 | Load index |
| A8 | Speed index | |
| ⑤ | AR-16 | Manufacturer’s tread pattern designation |
| 8 PR | Number of plies in the carcass (bias-ply tyres) |
Old / New Size Designation of Bias-Ply Tyres
| Old | New | Old | New | |
|---|---|---|---|---|
| 8-24 | 8.3-24 | 7-30 | 7.2-30 | |
| 9-24 | 9.5-24 | 9-30 | 9.5-30 | |
| 10-24 | 11.2-24 | 13-30 | 14.9-30 | |
| 11-24 | 12.4-24 | 14-30 | 16.9-30 | |
| 12-24 | 13.6-24 | 15-30 | 18.4-30 | |
| 13-24 | 14.9-24 | 8-32 | 8.3-32 | |
| 14-24 | 16.9-24 | 9-32 | 9.5-32 | |
| 8-28 | 8.3-28 | 10-32 | 11.2-32 | |
| 9-28 | 9.5-28 | 11-32 | 12.4-32 | |
| 10-28 | 11.2-28 | 14-34 | 16.9-34 | |
| 11-28 | 12.4-28 | 15-34 | 18.4-34 | |
| 12-28 | 13.6-28 | 9-36 | 9.5-36 | |
| 13-28 | 14.9-28 | 11-36 | 12.4-36 | |
| 14-28 | 16.9-28 | 12-36 | 13.6-36 |