Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 385/75-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 38.74 (983.9) | 13.3 (337.7) 52.3% |
| Width inches (mm) | 5.31 (135) | 15.16 (385) | 9.84 (250) 185.2% |
| Circum. inches (mm) | 79.93 (2030.1) | 121.69 (3091.01) | 41.77 (1060.92) 52.3% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 11.37 (288.75) | 7.65 (194.25) 205.6% |
| Revolutions per mile (km) | 792.74 (492.59) | 520.65 (323.52) | -272.09 (-169.07) -34.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.45 mph (49.01 km/h) |
| 25 mph (40.23 km/h) | 38.06 mph (61.26 km/h) |
| 30 mph (48.28 km/h) | 45.68 mph (73.51 km/h) |
| 35 mph (56.33 km/h) | 53.29 mph (85.76 km/h) |
| 40 mph (64.37 km/h) | 60.9 mph (98.02 km/h) |
| 45 mph (72.42 km/h) | 68.52 mph (110.27 km/h) |
| 50 mph (80.47 km/h) | 76.13 mph (122.52 km/h) |
| 55 mph (88.51 km/h) | 83.74 mph (134.77 km/h) |
| 60 mph (96.56 km/h) | 91.36 mph (147.02 km/h) |
| 65 mph (104.61 km/h) | 98.97 mph (159.27 km/h) |
| 70 mph (112.65 km/h) | 106.58 mph (171.53 km/h) |
| 75 mph (120.7 km/h) | 114.19 mph (183.78 km/h) |
| 80 mph (128.75 km/h) | 121.81 mph (196.03 km/h) |
| 85 mph (136.79 km/h) | 129.42 mph (208.28 km/h) |
| 90 mph (144.84 km/h) | 137.03 mph (220.53 km/h) |
| 95 mph (152.89 km/h) | 144.65 mph (232.79 km/h) |
| 100 mph (160.93 km/h) | 152.26 mph (245.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1325 | 1539 | 1658 | 1731 | 1810 | 1866 | 1928 | 2002 | 2103 | 2205 | 2317 | 2407 | 2571 | 2751 | 2892 | 2983 | 3033 | 3219 | 3479 | 4043 |
Better Fuel Economy Factory Ratios Increased Power
