| 50's Tire Size | 60's Tire Size | 70's Tire Size | Today's Modern Tire Size |
| 750-14 | 775-14 | F78-14 | 205/75R14 |
| 800-14 | 825-14 | G78-14 | 215/75R14 |
| 850-14 | 855-14 | H78-14 | 225/70R14 is not them same height and width, but is the closest available size. Actual equivalent sizes 225/75R14, 235/70R14, 235/75R14 are not available by a modern radial tire manufacturer. |
| 560-15 or 600-15 | 165R15 | 165/80R15 | |
| 670-15 | 775-15 | F78-15 | 205/75R15 |
| 710-15 | 815-15 | G78-15 | 215/75R15 |
| 760-15 | 845-15 | H78-15 | 225/75R15 |
| 800-15 | 900-15 | L78-15 | 235/75R15 |
| 600-16 / 650-16 | 215/70R16 is the size we recommend. It is not the same height and width, but it is the closest available size in a modern radial tires. 16" bias ply tire radial conversion charts do not exist. Internet searches give different conversions sizes, but many of them do not correlate to any actual modern day radial tire size that is currently being made. | ||