Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 30/9.5-15 | 245/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.99 (761.78) | 29.47 (748.5) | -0.52 (-13.28) -1.7% |
| Width inches (mm) | 9.49 (241) | 9.65 (245) | 0.16 (4) 1.7% |
| Circum. inches (mm) | 94.22 (2393.2) | 92.58 (2351.48) | -1.64 (-41.72) -1.7% |
| Sidewall Height inches (mm) | 7.5 (190.39) | 7.23 (183.75) | -0.26 (-6.64) -3.5% |
| Revolutions per mile (km) | 672.46 (417.85) | 684.4 (425.26) | 11.93 (7.41) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.65 mph (31.63 km/h) |
| 25 mph (40.23 km/h) | 24.56 mph (39.53 km/h) |
| 30 mph (48.28 km/h) | 29.48 mph (47.44 km/h) |
| 35 mph (56.33 km/h) | 34.39 mph (55.35 km/h) |
| 40 mph (64.37 km/h) | 39.3 mph (63.25 km/h) |
| 45 mph (72.42 km/h) | 44.22 mph (71.16 km/h) |
| 50 mph (80.47 km/h) | 49.13 mph (79.06 km/h) |
| 55 mph (88.51 km/h) | 54.04 mph (86.97 km/h) |
| 60 mph (96.56 km/h) | 58.95 mph (94.88 km/h) |
| 65 mph (104.61 km/h) | 63.87 mph (102.78 km/h) |
| 70 mph (112.65 km/h) | 68.78 mph (110.69 km/h) |
| 75 mph (120.7 km/h) | 73.69 mph (118.6 km/h) |
| 80 mph (128.75 km/h) | 78.61 mph (126.5 km/h) |
| 85 mph (136.79 km/h) | 83.52 mph (134.41 km/h) |
| 90 mph (144.84 km/h) | 88.43 mph (142.32 km/h) |
| 95 mph (152.89 km/h) | 93.34 mph (150.22 km/h) |
| 100 mph (160.93 km/h) | 98.26 mph (158.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1742 | 2023 | 2179 | 2275 | 2379 | 2453 | 2535 | 2631 | 2764 | 2898 | 3046 | 3165 | 3380 | 3617 | 3802 | 3921 | 3987 | 4232 | 4573 | 5314 |
Better Fuel Economy Factory Ratios Increased Power
