Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/100-18 | 150/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.45 (697.2) | 26.27 (667.2) | -1.18 (-30) -4.3% |
| Width inches (mm) | 4.72 (120) | 5.91 (150) | 1.18 (30) 25% |
| Circum. inches (mm) | 86.23 (2190.32) | 82.52 (2096.07) | -3.71 (-94.25) -4.3% |
| Sidewall Height inches (mm) | 4.72 (120) | 4.13 (105) | -0.59 (-15) -12.5% |
| Revolutions per mile (km) | 734.75 (456.55) | 767.79 (477.08) | 33.04 (20.53) 4.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.14 mph (30.8 km/h) |
| 25 mph (40.23 km/h) | 23.92 mph (38.5 km/h) |
| 30 mph (48.28 km/h) | 28.71 mph (46.2 km/h) |
| 35 mph (56.33 km/h) | 33.49 mph (53.9 km/h) |
| 40 mph (64.37 km/h) | 38.28 mph (61.6 km/h) |
| 45 mph (72.42 km/h) | 43.06 mph (69.3 km/h) |
| 50 mph (80.47 km/h) | 47.85 mph (77 km/h) |
| 55 mph (88.51 km/h) | 52.63 mph (84.71 km/h) |
| 60 mph (96.56 km/h) | 57.42 mph (92.41 km/h) |
| 65 mph (104.61 km/h) | 62.2 mph (100.11 km/h) |
| 70 mph (112.65 km/h) | 66.99 mph (107.81 km/h) |
| 75 mph (120.7 km/h) | 71.77 mph (115.51 km/h) |
| 80 mph (128.75 km/h) | 76.56 mph (123.21 km/h) |
| 85 mph (136.79 km/h) | 81.34 mph (130.91 km/h) |
| 90 mph (144.84 km/h) | 86.13 mph (138.61 km/h) |
| 95 mph (152.89 km/h) | 90.91 mph (146.31 km/h) |
| 100 mph (160.93 km/h) | 95.7 mph (154.01 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
