Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-20 | 255/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.04 (788.5) | 32.06 (814.3) | 1.02 (25.8) 3.3% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 97.53 (2477.15) | 100.72 (2558.2) | 3.19 (81.05) 3.3% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 7.53 (191.25) | 2.01 (51) 36.4% |
| Revolutions per mile (km) | 649.68 (403.69) | 629.09 (390.9) | -20.58 (-12.79) -3.2% |
255/75-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.24 km/h) |
| 25 mph (40.23 km/h) | 25.82 mph (41.55 km/h) |
| 30 mph (48.28 km/h) | 30.98 mph (49.86 km/h) |
| 35 mph (56.33 km/h) | 36.15 mph (58.17 km/h) |
| 40 mph (64.37 km/h) | 41.31 mph (66.48 km/h) |
| 45 mph (72.42 km/h) | 46.47 mph (74.79 km/h) |
| 50 mph (80.47 km/h) | 51.64 mph (83.1 km/h) |
| 55 mph (88.51 km/h) | 56.8 mph (91.41 km/h) |
| 60 mph (96.56 km/h) | 61.96 mph (99.72 km/h) |
| 65 mph (104.61 km/h) | 67.13 mph (108.03 km/h) |
| 70 mph (112.65 km/h) | 72.29 mph (116.34 km/h) |
| 75 mph (120.7 km/h) | 77.45 mph (124.65 km/h) |
| 80 mph (128.75 km/h) | 82.62 mph (132.96 km/h) |
| 85 mph (136.79 km/h) | 87.78 mph (141.27 km/h) |
| 90 mph (144.84 km/h) | 92.94 mph (149.58 km/h) |
| 95 mph (152.89 km/h) | 98.11 mph (157.89 km/h) |
| 100 mph (160.93 km/h) | 103.27 mph (166.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2091 | 2187 | 2255 | 2330 | 2418 | 2541 | 2664 | 2800 | 2909 | 3106 | 3324 | 3495 | 3604 | 3665 | 3890 | 4203 | 4885 |
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