R-4A
| Dimensions | PR | type | total diameter (mm) | Section width (mm) | Standard rims | inflation pressure (kpa) | Maximum load (kgs) |
| 14.00-25 | 36PR | TT | 1370 | 375 | 10.00/2.0 | 1200 | 11500 |
| 14.00-24 | 36PR | TT | 1370 | 375 | 10.0 | 1200 | 11500 |
| 13.00-25 | 36PR | TT | 1300 | 350 | 8.5 | 1200 | 10600 |
| 14.00-20 | 28PR | TT | 1265 | 375 | 10.0 | 890 | 8500 |
