Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-21 | 255/55-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.74 (780.9) | 30.04 (763.1) | -0.7 (-17.8) -2.3% |
| Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
| Circum. inches (mm) | 96.59 (2453.27) | 94.38 (2397.35) | -2.2 (-55.92) -2.3% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.52 (140.25) | 0.65 (16.5) 13.3% |
| Revolutions per mile (km) | 656 (407.62) | 671.3 (417.13) | 15.3 (9.51) 2.3% |
255/55-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.45 km/h) |
| 25 mph (40.23 km/h) | 24.43 mph (39.32 km/h) |
| 30 mph (48.28 km/h) | 29.32 mph (47.18 km/h) |
| 35 mph (56.33 km/h) | 34.2 mph (55.04 km/h) |
| 40 mph (64.37 km/h) | 39.09 mph (62.91 km/h) |
| 45 mph (72.42 km/h) | 43.97 mph (70.77 km/h) |
| 50 mph (80.47 km/h) | 48.86 mph (78.63 km/h) |
| 55 mph (88.51 km/h) | 53.75 mph (86.5 km/h) |
| 60 mph (96.56 km/h) | 58.63 mph (94.36 km/h) |
| 65 mph (104.61 km/h) | 63.52 mph (102.22 km/h) |
| 70 mph (112.65 km/h) | 68.4 mph (110.09 km/h) |
| 75 mph (120.7 km/h) | 73.29 mph (117.95 km/h) |
| 80 mph (128.75 km/h) | 78.18 mph (125.81 km/h) |
| 85 mph (136.79 km/h) | 83.06 mph (133.68 km/h) |
| 90 mph (144.84 km/h) | 87.95 mph (141.54 km/h) |
| 95 mph (152.89 km/h) | 92.83 mph (149.4 km/h) |
| 100 mph (160.93 km/h) | 97.72 mph (157.27 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1708 | 1985 | 2137 | 2232 | 2334 | 2406 | 2486 | 2581 | 2712 | 2842 | 2988 | 3104 | 3315 | 3548 | 3729 | 3846 | 3911 | 4151 | 4485 | 5212 |
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