Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-18 | 300/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.19 (665.2) | 36.9 (937.2) | 10.71 (272) 40.9% |
| Width inches (mm) | 5.12 (130) | 11.81 (300) | 6.69 (170) 130.8% |
| Circum. inches (mm) | 82.28 (2089.79) | 115.92 (2944.3) | 33.64 (854.51) 40.9% |
| Sidewall Height inches (mm) | 4.09 (104) | 9.45 (240) | 5.35 (136) 130.8% |
| Revolutions per mile (km) | 770.1 (478.52) | 546.6 (339.64) | -223.5 (-138.88) -29% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.18 mph (45.35 km/h) |
| 25 mph (40.23 km/h) | 35.22 mph (56.69 km/h) |
| 30 mph (48.28 km/h) | 42.27 mph (68.02 km/h) |
| 35 mph (56.33 km/h) | 49.31 mph (79.36 km/h) |
| 40 mph (64.37 km/h) | 56.36 mph (90.7 km/h) |
| 45 mph (72.42 km/h) | 63.4 mph (102.03 km/h) |
| 50 mph (80.47 km/h) | 70.44 mph (113.37 km/h) |
| 55 mph (88.51 km/h) | 77.49 mph (124.71 km/h) |
| 60 mph (96.56 km/h) | 84.53 mph (136.04 km/h) |
| 65 mph (104.61 km/h) | 91.58 mph (147.38 km/h) |
| 70 mph (112.65 km/h) | 98.62 mph (158.72 km/h) |
| 75 mph (120.7 km/h) | 105.67 mph (170.06 km/h) |
| 80 mph (128.75 km/h) | 112.71 mph (181.39 km/h) |
| 85 mph (136.79 km/h) | 119.76 mph (192.73 km/h) |
| 90 mph (144.84 km/h) | 126.8 mph (204.07 km/h) |
| 95 mph (152.89 km/h) | 133.85 mph (215.4 km/h) |
| 100 mph (160.93 km/h) | 140.89 mph (226.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1391 | 1616 | 1740 | 1817 | 1900 | 1959 | 2024 | 2101 | 2208 | 2314 | 2433 | 2527 | 2699 | 2889 | 3036 | 3131 | 3184 | 3380 | 3652 | 4244 |
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