Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 395/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 38.22 (970.7) | 12.89 (327.5) 50.9% |
| Width inches (mm) | 6.1 (155) | 15.55 (395) | 9.45 (240) 154.8% |
| Circum. inches (mm) | 79.55 (2020.67) | 120.06 (3049.54) | 40.51 (1028.87) 50.9% |
| Sidewall Height inches (mm) | 3.66 (93) | 10.11 (256.75) | 6.45 (163.75) 176.1% |
| Revolutions per mile (km) | 796.44 (494.88) | 527.73 (327.92) | -268.71 (-166.97) -33.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.18 mph (48.58 km/h) |
| 25 mph (40.23 km/h) | 37.73 mph (60.72 km/h) |
| 30 mph (48.28 km/h) | 45.28 mph (72.86 km/h) |
| 35 mph (56.33 km/h) | 52.82 mph (85.01 km/h) |
| 40 mph (64.37 km/h) | 60.37 mph (97.15 km/h) |
| 45 mph (72.42 km/h) | 67.91 mph (109.3 km/h) |
| 50 mph (80.47 km/h) | 75.46 mph (121.44 km/h) |
| 55 mph (88.51 km/h) | 83 mph (133.58 km/h) |
| 60 mph (96.56 km/h) | 90.55 mph (145.73 km/h) |
| 65 mph (104.61 km/h) | 98.1 mph (157.87 km/h) |
| 70 mph (112.65 km/h) | 105.64 mph (170.01 km/h) |
| 75 mph (120.7 km/h) | 113.19 mph (182.16 km/h) |
| 80 mph (128.75 km/h) | 120.73 mph (194.3 km/h) |
| 85 mph (136.79 km/h) | 128.28 mph (206.45 km/h) |
| 90 mph (144.84 km/h) | 135.83 mph (218.59 km/h) |
| 95 mph (152.89 km/h) | 143.37 mph (230.73 km/h) |
| 100 mph (160.93 km/h) | 150.92 mph (242.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1343 | 1560 | 1680 | 1754 | 1834 | 1892 | 1954 | 2029 | 2132 | 2234 | 2349 | 2440 | 2606 | 2789 | 2932 | 3023 | 3075 | 3263 | 3526 | 4098 |
Better Fuel Economy Factory Ratios Increased Power
