Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/30-18 | 280/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.97 (634.2) | 33.43 (849.2) | 8.46 (215) 33.9% |
| Width inches (mm) | 11.61 (295) | 11.02 (280) | -0.59 (-15) -5.1% |
| Circum. inches (mm) | 78.44 (1992.4) | 105.03 (2667.84) | 26.59 (675.44) 33.9% |
| Sidewall Height inches (mm) | 3.48 (88.5) | 7.72 (196) | 4.23 (107.5) 121.5% |
| Revolutions per mile (km) | 807.74 (501.91) | 603.24 (374.83) | -204.5 (-127.07) -25.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.78 mph (43.1 km/h) |
| 25 mph (40.23 km/h) | 33.48 mph (53.87 km/h) |
| 30 mph (48.28 km/h) | 40.17 mph (64.65 km/h) |
| 35 mph (56.33 km/h) | 46.87 mph (75.42 km/h) |
| 40 mph (64.37 km/h) | 53.56 mph (86.2 km/h) |
| 45 mph (72.42 km/h) | 60.26 mph (96.97 km/h) |
| 50 mph (80.47 km/h) | 66.95 mph (107.75 km/h) |
| 55 mph (88.51 km/h) | 73.65 mph (118.52 km/h) |
| 60 mph (96.56 km/h) | 80.34 mph (129.3 km/h) |
| 65 mph (104.61 km/h) | 87.04 mph (140.07 km/h) |
| 70 mph (112.65 km/h) | 93.73 mph (150.85 km/h) |
| 75 mph (120.7 km/h) | 100.43 mph (161.62 km/h) |
| 80 mph (128.75 km/h) | 107.12 mph (172.39 km/h) |
| 85 mph (136.79 km/h) | 113.82 mph (183.17 km/h) |
| 90 mph (144.84 km/h) | 120.51 mph (193.94 km/h) |
| 95 mph (152.89 km/h) | 127.21 mph (204.72 km/h) |
| 100 mph (160.93 km/h) | 133.9 mph (215.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1535 | 1783 | 1921 | 2005 | 2097 | 2162 | 2234 | 2319 | 2437 | 2554 | 2685 | 2789 | 2979 | 3188 | 3351 | 3456 | 3514 | 3730 | 4031 | 4684 |
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