Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-16 | 255/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.47 (773.9) | 32.06 (814.2) | 1.59 (40.3) 5.2% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 95.72 (2431.28) | 100.7 (2557.88) | 4.98 (126.61) 5.2% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 7.03 (178.5) | -0.21 (-5.25) -2.9% |
| Revolutions per mile (km) | 661.93 (411.31) | 629.17 (390.95) | -32.76 (-20.36) -4.9% |
255/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.04 mph (33.86 km/h) |
| 25 mph (40.23 km/h) | 26.3 mph (42.33 km/h) |
| 30 mph (48.28 km/h) | 31.56 mph (50.79 km/h) |
| 35 mph (56.33 km/h) | 36.82 mph (59.26 km/h) |
| 40 mph (64.37 km/h) | 42.08 mph (67.73 km/h) |
| 45 mph (72.42 km/h) | 47.34 mph (76.19 km/h) |
| 50 mph (80.47 km/h) | 52.6 mph (84.66 km/h) |
| 55 mph (88.51 km/h) | 57.86 mph (93.12 km/h) |
| 60 mph (96.56 km/h) | 63.12 mph (101.59 km/h) |
| 65 mph (104.61 km/h) | 68.38 mph (110.05 km/h) |
| 70 mph (112.65 km/h) | 73.65 mph (118.52 km/h) |
| 75 mph (120.7 km/h) | 78.91 mph (126.99 km/h) |
| 80 mph (128.75 km/h) | 84.17 mph (135.45 km/h) |
| 85 mph (136.79 km/h) | 89.43 mph (143.92 km/h) |
| 90 mph (144.84 km/h) | 94.69 mph (152.38 km/h) |
| 95 mph (152.89 km/h) | 99.95 mph (160.85 km/h) |
| 100 mph (160.93 km/h) | 105.21 mph (169.32 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 | 2092 | 2187 | 2255 | 2330 | 2419 | 2541 | 2664 | 2800 | 2909 | 3107 | 3325 | 3495 | 3604 | 3666 | 3890 | 4204 | 4885 |
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