Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/100-18 | 90/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 24.38 (619.2) | 0.08 (2) 0.3% |
| Width inches (mm) | 3.15 (80) | 3.54 (90) | 0.39 (10) 12.5% |
| Circum. inches (mm) | 76.34 (1938.99) | 76.59 (1945.27) | 0.25 (6.28) 0.3% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.19 (81) | 0.04 (1) 1.3% |
| Revolutions per mile (km) | 829.99 (515.73) | 827.31 (514.07) | -2.68 (-1.67) -0.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.06 mph (32.29 km/h) |
| 25 mph (40.23 km/h) | 25.08 mph (40.36 km/h) |
| 30 mph (48.28 km/h) | 30.1 mph (48.44 km/h) |
| 35 mph (56.33 km/h) | 35.11 mph (56.51 km/h) |
| 40 mph (64.37 km/h) | 40.13 mph (64.58 km/h) |
| 45 mph (72.42 km/h) | 45.15 mph (72.66 km/h) |
| 50 mph (80.47 km/h) | 50.16 mph (80.73 km/h) |
| 55 mph (88.51 km/h) | 55.18 mph (88.8 km/h) |
| 60 mph (96.56 km/h) | 60.19 mph (96.87 km/h) |
| 65 mph (104.61 km/h) | 65.21 mph (104.95 km/h) |
| 70 mph (112.65 km/h) | 70.23 mph (113.02 km/h) |
| 75 mph (120.7 km/h) | 75.24 mph (121.09 km/h) |
| 80 mph (128.75 km/h) | 80.26 mph (129.16 km/h) |
| 85 mph (136.79 km/h) | 85.28 mph (137.24 km/h) |
| 90 mph (144.84 km/h) | 90.29 mph (145.31 km/h) |
| 95 mph (152.89 km/h) | 95.31 mph (153.38 km/h) |
| 100 mph (160.93 km/h) | 100.32 mph (161.46 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
