Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/70-18 | 150/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.72 (653.2) | 26.27 (667.2) | 0.55 (14) 2.1% |
| Width inches (mm) | 5.51 (140) | 5.91 (150) | 0.39 (10) 7.1% |
| Circum. inches (mm) | 80.79 (2052.09) | 82.52 (2096.07) | 1.73 (43.98) 2.1% |
| Sidewall Height inches (mm) | 3.86 (98) | 4.13 (105) | 0.28 (7) 7.1% |
| Revolutions per mile (km) | 784.25 (487.31) | 767.79 (477.08) | -16.46 (-10.23) -2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.43 mph (32.88 km/h) |
| 25 mph (40.23 km/h) | 25.54 mph (41.1 km/h) |
| 30 mph (48.28 km/h) | 30.64 mph (49.32 km/h) |
| 35 mph (56.33 km/h) | 35.75 mph (57.53 km/h) |
| 40 mph (64.37 km/h) | 40.86 mph (65.75 km/h) |
| 45 mph (72.42 km/h) | 45.96 mph (73.97 km/h) |
| 50 mph (80.47 km/h) | 51.07 mph (82.19 km/h) |
| 55 mph (88.51 km/h) | 56.18 mph (90.41 km/h) |
| 60 mph (96.56 km/h) | 61.29 mph (98.63 km/h) |
| 65 mph (104.61 km/h) | 66.39 mph (106.85 km/h) |
| 70 mph (112.65 km/h) | 71.5 mph (115.07 km/h) |
| 75 mph (120.7 km/h) | 76.61 mph (123.29 km/h) |
| 80 mph (128.75 km/h) | 81.71 mph (131.51 km/h) |
| 85 mph (136.79 km/h) | 86.82 mph (139.73 km/h) |
| 90 mph (144.84 km/h) | 91.93 mph (147.95 km/h) |
| 95 mph (152.89 km/h) | 97.04 mph (156.16 km/h) |
| 100 mph (160.93 km/h) | 102.14 mph (164.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1954 | 2270 | 2444 | 2553 | 2669 | 2752 | 2844 | 2952 | 3101 | 3251 | 3417 | 3550 | 3791 | 4057 | 4265 | 4398 | 4473 | 4748 | 5130 | 5961 |
Better Fuel Economy Factory Ratios Increased Power
