Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/90-16 | 318/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.86 (631.4) | 37.03 (940.6) | 12.17 (309.2) 49% |
| Width inches (mm) | 4.92 (125) | 12.52 (318) | 7.6 (193) 154.4% |
| Circum. inches (mm) | 78.09 (1983.6) | 116.34 (2954.98) | 38.24 (971.38) 49% |
| Sidewall Height inches (mm) | 4.43 (112.5) | 10.02 (254.4) | 5.59 (141.9) 126.1% |
| Revolutions per mile (km) | 811.32 (504.13) | 544.62 (338.41) | -266.7 (-165.72) -32.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.79 mph (47.95 km/h) |
| 25 mph (40.23 km/h) | 37.24 mph (59.94 km/h) |
| 30 mph (48.28 km/h) | 44.69 mph (71.92 km/h) |
| 35 mph (56.33 km/h) | 52.14 mph (83.91 km/h) |
| 40 mph (64.37 km/h) | 59.59 mph (95.9 km/h) |
| 45 mph (72.42 km/h) | 67.04 mph (107.89 km/h) |
| 50 mph (80.47 km/h) | 74.49 mph (119.87 km/h) |
| 55 mph (88.51 km/h) | 81.93 mph (131.86 km/h) |
| 60 mph (96.56 km/h) | 89.38 mph (143.85 km/h) |
| 65 mph (104.61 km/h) | 96.83 mph (155.83 km/h) |
| 70 mph (112.65 km/h) | 104.28 mph (167.82 km/h) |
| 75 mph (120.7 km/h) | 111.73 mph (179.81 km/h) |
| 80 mph (128.75 km/h) | 119.18 mph (191.8 km/h) |
| 85 mph (136.79 km/h) | 126.62 mph (203.78 km/h) |
| 90 mph (144.84 km/h) | 134.07 mph (215.77 km/h) |
| 95 mph (152.89 km/h) | 141.52 mph (227.76 km/h) |
| 100 mph (160.93 km/h) | 148.97 mph (239.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1610 | 1734 | 1811 | 1893 | 1952 | 2017 | 2094 | 2200 | 2306 | 2424 | 2518 | 2689 | 2878 | 3026 | 3120 | 3173 | 3368 | 3639 | 4229 |
Better Fuel Economy Factory Ratios Increased Power
