Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/100-18 | 100/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.45 (697.2) | 25.87 (657.2) | -1.57 (-40) -5.7% |
| Width inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
| Circum. inches (mm) | 86.23 (2190.32) | 81.29 (2064.65) | -4.95 (-125.66) -5.7% |
| Sidewall Height inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
| Revolutions per mile (km) | 734.75 (456.55) | 779.47 (484.34) | 44.72 (27.79) 6.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.85 mph (30.34 km/h) |
| 25 mph (40.23 km/h) | 23.57 mph (37.93 km/h) |
| 30 mph (48.28 km/h) | 28.28 mph (45.51 km/h) |
| 35 mph (56.33 km/h) | 32.99 mph (53.1 km/h) |
| 40 mph (64.37 km/h) | 37.71 mph (60.68 km/h) |
| 45 mph (72.42 km/h) | 42.42 mph (68.27 km/h) |
| 50 mph (80.47 km/h) | 47.13 mph (75.85 km/h) |
| 55 mph (88.51 km/h) | 51.84 mph (83.44 km/h) |
| 60 mph (96.56 km/h) | 56.56 mph (91.02 km/h) |
| 65 mph (104.61 km/h) | 61.27 mph (98.61 km/h) |
| 70 mph (112.65 km/h) | 65.98 mph (106.19 km/h) |
| 75 mph (120.7 km/h) | 70.7 mph (113.78 km/h) |
| 80 mph (128.75 km/h) | 75.41 mph (121.36 km/h) |
| 85 mph (136.79 km/h) | 80.12 mph (128.95 km/h) |
| 90 mph (144.84 km/h) | 84.84 mph (136.53 km/h) |
| 95 mph (152.89 km/h) | 89.55 mph (144.12 km/h) |
| 100 mph (160.93 km/h) | 94.26 mph (151.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 2304 | 2482 | 2591 | 2710 | 2794 | 2887 | 2997 | 3148 | 3300 | 3469 | 3604 | 3849 | 4119 | 4330 | 4465 | 4541 | 4820 | 5208 | 6052 |
Better Fuel Economy Factory Ratios Increased Power
