Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/100-18 | 90/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657.2) | 24.38 (619.2) | -1.5 (-38) -5.8% |
| Width inches (mm) | 3.94 (100) | 3.54 (90) | -0.39 (-10) -10% |
| Circum. inches (mm) | 81.29 (2064.65) | 76.59 (1945.27) | -4.7 (-119.38) -5.8% |
| Sidewall Height inches (mm) | 3.94 (100) | 3.19 (81) | -0.75 (-19) -19% |
| Revolutions per mile (km) | 779.47 (484.34) | 827.31 (514.07) | 47.84 (29.72) 6.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.84 mph (30.33 km/h) |
| 25 mph (40.23 km/h) | 23.55 mph (37.91 km/h) |
| 30 mph (48.28 km/h) | 28.27 mph (45.49 km/h) |
| 35 mph (56.33 km/h) | 32.98 mph (53.07 km/h) |
| 40 mph (64.37 km/h) | 37.69 mph (60.65 km/h) |
| 45 mph (72.42 km/h) | 42.4 mph (68.23 km/h) |
| 50 mph (80.47 km/h) | 47.11 mph (75.81 km/h) |
| 55 mph (88.51 km/h) | 51.82 mph (83.4 km/h) |
| 60 mph (96.56 km/h) | 56.53 mph (90.98 km/h) |
| 65 mph (104.61 km/h) | 61.24 mph (98.56 km/h) |
| 70 mph (112.65 km/h) | 65.95 mph (106.14 km/h) |
| 75 mph (120.7 km/h) | 70.66 mph (113.72 km/h) |
| 80 mph (128.75 km/h) | 75.37 mph (121.3 km/h) |
| 85 mph (136.79 km/h) | 80.09 mph (128.88 km/h) |
| 90 mph (144.84 km/h) | 84.8 mph (136.47 km/h) |
| 95 mph (152.89 km/h) | 89.51 mph (144.05 km/h) |
| 100 mph (160.93 km/h) | 94.22 mph (151.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2105 | 2446 | 2634 | 2750 | 2876 | 2965 | 3064 | 3180 | 3342 | 3503 | 3682 | 3825 | 4085 | 4372 | 4596 | 4739 | 4820 | 5116 | 5528 | 6424 |
Better Fuel Economy Factory Ratios Increased Power
