Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 395/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 38.33 (973.5) | 12.89 (327.3) 50.6% |
| Width inches (mm) | 5.31 (135) | 15.55 (395) | 10.24 (260) 192.6% |
| Circum. inches (mm) | 79.93 (2030.1) | 120.41 (3058.34) | 40.48 (1028.24) 50.6% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 11.66 (296.25) | 7.94 (201.75) 213.5% |
| Revolutions per mile (km) | 792.74 (492.59) | 526.21 (326.97) | -266.53 (-165.61) -33.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.13 mph (48.49 km/h) |
| 25 mph (40.23 km/h) | 37.66 mph (60.61 km/h) |
| 30 mph (48.28 km/h) | 45.19 mph (72.73 km/h) |
| 35 mph (56.33 km/h) | 52.73 mph (84.86 km/h) |
| 40 mph (64.37 km/h) | 60.26 mph (96.98 km/h) |
| 45 mph (72.42 km/h) | 67.79 mph (109.1 km/h) |
| 50 mph (80.47 km/h) | 75.32 mph (121.22 km/h) |
| 55 mph (88.51 km/h) | 82.86 mph (133.35 km/h) |
| 60 mph (96.56 km/h) | 90.39 mph (145.47 km/h) |
| 65 mph (104.61 km/h) | 97.92 mph (157.59 km/h) |
| 70 mph (112.65 km/h) | 105.45 mph (169.71 km/h) |
| 75 mph (120.7 km/h) | 112.99 mph (181.84 km/h) |
| 80 mph (128.75 km/h) | 120.52 mph (193.96 km/h) |
| 85 mph (136.79 km/h) | 128.05 mph (206.08 km/h) |
| 90 mph (144.84 km/h) | 135.58 mph (218.2 km/h) |
| 95 mph (152.89 km/h) | 143.12 mph (230.33 km/h) |
| 100 mph (160.93 km/h) | 150.65 mph (242.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1339 | 1556 | 1675 | 1749 | 1829 | 1886 | 1949 | 2023 | 2125 | 2228 | 2342 | 2433 | 2598 | 2781 | 2923 | 3014 | 3066 | 3254 | 3516 | 4086 |
Better Fuel Economy Factory Ratios Increased Power
