Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-21 | 255/55-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.97 (735.9) | 30.04 (763.1) | 1.07 (27.2) 3.7% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 91.02 (2311.9) | 94.38 (2397.35) | 3.36 (85.45) 3.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.52 (140.25) | 1.54 (39) 38.5% |
| Revolutions per mile (km) | 696.11 (432.54) | 671.3 (417.13) | -24.81 (-15.42) -3.6% |
255/55-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.74 mph (33.38 km/h) |
| 25 mph (40.23 km/h) | 25.92 mph (41.72 km/h) |
| 30 mph (48.28 km/h) | 31.11 mph (50.06 km/h) |
| 35 mph (56.33 km/h) | 36.29 mph (58.41 km/h) |
| 40 mph (64.37 km/h) | 41.48 mph (66.75 km/h) |
| 45 mph (72.42 km/h) | 46.66 mph (75.1 km/h) |
| 50 mph (80.47 km/h) | 51.85 mph (83.44 km/h) |
| 55 mph (88.51 km/h) | 57.03 mph (91.79 km/h) |
| 60 mph (96.56 km/h) | 62.22 mph (100.13 km/h) |
| 65 mph (104.61 km/h) | 67.4 mph (108.47 km/h) |
| 70 mph (112.65 km/h) | 72.59 mph (116.82 km/h) |
| 75 mph (120.7 km/h) | 77.77 mph (125.16 km/h) |
| 80 mph (128.75 km/h) | 82.96 mph (133.51 km/h) |
| 85 mph (136.79 km/h) | 88.14 mph (141.85 km/h) |
| 90 mph (144.84 km/h) | 93.33 mph (150.19 km/h) |
| 95 mph (152.89 km/h) | 98.51 mph (158.54 km/h) |
| 100 mph (160.93 km/h) | 103.7 mph (166.88 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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