Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 395/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 38.22 (970.7) | 12.78 (324.5) 50.2% |
| Width inches (mm) | 5.31 (135) | 15.55 (395) | 10.24 (260) 192.6% |
| Circum. inches (mm) | 79.93 (2030.1) | 120.06 (3049.54) | 40.14 (1019.45) 50.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 10.11 (256.75) | 6.39 (162.25) 171.7% |
| Revolutions per mile (km) | 792.74 (492.59) | 527.73 (327.92) | -265.01 (-164.67) -33.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.04 mph (48.35 km/h) |
| 25 mph (40.23 km/h) | 37.55 mph (60.44 km/h) |
| 30 mph (48.28 km/h) | 45.06 mph (72.53 km/h) |
| 35 mph (56.33 km/h) | 52.58 mph (84.61 km/h) |
| 40 mph (64.37 km/h) | 60.09 mph (96.7 km/h) |
| 45 mph (72.42 km/h) | 67.6 mph (108.79 km/h) |
| 50 mph (80.47 km/h) | 75.11 mph (120.88 km/h) |
| 55 mph (88.51 km/h) | 82.62 mph (132.96 km/h) |
| 60 mph (96.56 km/h) | 90.13 mph (145.05 km/h) |
| 65 mph (104.61 km/h) | 97.64 mph (157.14 km/h) |
| 70 mph (112.65 km/h) | 105.15 mph (169.23 km/h) |
| 75 mph (120.7 km/h) | 112.66 mph (181.31 km/h) |
| 80 mph (128.75 km/h) | 120.17 mph (193.4 km/h) |
| 85 mph (136.79 km/h) | 127.68 mph (205.49 km/h) |
| 90 mph (144.84 km/h) | 135.19 mph (217.58 km/h) |
| 95 mph (152.89 km/h) | 142.71 mph (229.66 km/h) |
| 100 mph (160.93 km/h) | 150.22 mph (241.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
