Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 395/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 36.77 (934) | 11.33 (287.8) 44.5% |
| Width inches (mm) | 5.31 (135) | 15.55 (395) | 10.24 (260) 192.6% |
| Circum. inches (mm) | 79.93 (2030.1) | 115.52 (2934.25) | 35.6 (904.15) 44.5% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 10.89 (276.5) | 7.17 (182) 192.6% |
| Revolutions per mile (km) | 792.74 (492.59) | 548.47 (340.8) | -244.27 (-151.78) -30.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.91 mph (46.52 km/h) |
| 25 mph (40.23 km/h) | 36.13 mph (58.15 km/h) |
| 30 mph (48.28 km/h) | 43.36 mph (69.78 km/h) |
| 35 mph (56.33 km/h) | 50.59 mph (81.41 km/h) |
| 40 mph (64.37 km/h) | 57.81 mph (93.04 km/h) |
| 45 mph (72.42 km/h) | 65.04 mph (104.67 km/h) |
| 50 mph (80.47 km/h) | 72.27 mph (116.31 km/h) |
| 55 mph (88.51 km/h) | 79.5 mph (127.94 km/h) |
| 60 mph (96.56 km/h) | 86.72 mph (139.57 km/h) |
| 65 mph (104.61 km/h) | 93.95 mph (151.2 km/h) |
| 70 mph (112.65 km/h) | 101.18 mph (162.83 km/h) |
| 75 mph (120.7 km/h) | 108.4 mph (174.46 km/h) |
| 80 mph (128.75 km/h) | 115.63 mph (186.09 km/h) |
| 85 mph (136.79 km/h) | 122.86 mph (197.72 km/h) |
| 90 mph (144.84 km/h) | 130.08 mph (209.35 km/h) |
| 95 mph (152.89 km/h) | 137.31 mph (220.98 km/h) |
| 100 mph (160.93 km/h) | 144.54 mph (232.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1396 | 1621 | 1746 | 1823 | 1907 | 1966 | 2031 | 2108 | 2215 | 2322 | 2441 | 2536 | 2708 | 2898 | 3047 | 3142 | 3195 | 3391 | 3665 | 4259 |
Better Fuel Economy Factory Ratios Increased Power
