Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 32/10-17 | 285/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32 (812.8) | 38.2 (970.2) | 6.2 (157.4) 19.4% |
| Width inches (mm) | 10 (254) | 11.22 (285) | 1.22 (31) 12.2% |
| Circum. inches (mm) | 100.53 (2553.49) | 120 (3047.97) | 19.47 (494.49) 19.4% |
| Sidewall Height inches (mm) | 7.5 (190.5) | 10.1 (256.5) | 2.6 (66) 34.6% |
| Revolutions per mile (km) | 630.25 (391.62) | 528 (328.09) | -102.25 (-63.53) -16.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.87 mph (38.42 km/h) |
| 25 mph (40.23 km/h) | 29.84 mph (48.02 km/h) |
| 30 mph (48.28 km/h) | 35.81 mph (57.63 km/h) |
| 35 mph (56.33 km/h) | 41.78 mph (67.23 km/h) |
| 40 mph (64.37 km/h) | 47.75 mph (76.84 km/h) |
| 45 mph (72.42 km/h) | 53.71 mph (86.44 km/h) |
| 50 mph (80.47 km/h) | 59.68 mph (96.05 km/h) |
| 55 mph (88.51 km/h) | 65.65 mph (105.65 km/h) |
| 60 mph (96.56 km/h) | 71.62 mph (115.26 km/h) |
| 65 mph (104.61 km/h) | 77.59 mph (124.86 km/h) |
| 70 mph (112.65 km/h) | 83.56 mph (134.47 km/h) |
| 75 mph (120.7 km/h) | 89.52 mph (144.07 km/h) |
| 80 mph (128.75 km/h) | 95.49 mph (153.68 km/h) |
| 85 mph (136.79 km/h) | 101.46 mph (163.28 km/h) |
| 90 mph (144.84 km/h) | 107.43 mph (172.89 km/h) |
| 95 mph (152.89 km/h) | 113.4 mph (182.49 km/h) |
| 100 mph (160.93 km/h) | 119.37 mph (192.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1344 | 1561 | 1681 | 1755 | 1835 | 1893 | 1955 | 2030 | 2133 | 2236 | 2350 | 2441 | 2607 | 2790 | 2933 | 3025 | 3076 | 3265 | 3528 | 4100 |
Better Fuel Economy Factory Ratios Increased Power
