Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-16 | 285/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.47 (773.9) | 32.59 (827.7) | 2.12 (53.8) 7% |
| Width inches (mm) | 9.65 (245) | 11.22 (285) | 1.57 (40) 16.3% |
| Circum. inches (mm) | 95.72 (2431.28) | 102.37 (2600.3) | 6.65 (169.02) 7% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 7.29 (185.25) | 0.06 (1.5) 0.8% |
| Revolutions per mile (km) | 661.93 (411.31) | 618.91 (384.57) | -43.03 (-26.73) -6.5% |
285/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.39 mph (34.42 km/h) |
| 25 mph (40.23 km/h) | 26.74 mph (43.03 km/h) |
| 30 mph (48.28 km/h) | 32.09 mph (51.64 km/h) |
| 35 mph (56.33 km/h) | 37.43 mph (60.24 km/h) |
| 40 mph (64.37 km/h) | 42.78 mph (68.85 km/h) |
| 45 mph (72.42 km/h) | 48.13 mph (77.46 km/h) |
| 50 mph (80.47 km/h) | 53.48 mph (86.06 km/h) |
| 55 mph (88.51 km/h) | 58.82 mph (94.67 km/h) |
| 60 mph (96.56 km/h) | 64.17 mph (103.27 km/h) |
| 65 mph (104.61 km/h) | 69.52 mph (111.88 km/h) |
| 70 mph (112.65 km/h) | 74.87 mph (120.49 km/h) |
| 75 mph (120.7 km/h) | 80.21 mph (129.09 km/h) |
| 80 mph (128.75 km/h) | 85.56 mph (137.7 km/h) |
| 85 mph (136.79 km/h) | 90.91 mph (146.3 km/h) |
| 90 mph (144.84 km/h) | 96.26 mph (154.91 km/h) |
| 95 mph (152.89 km/h) | 101.6 mph (163.52 km/h) |
| 100 mph (160.93 km/h) | 106.95 mph (172.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1575 | 1830 | 1970 | 2058 | 2151 | 2218 | 2292 | 2379 | 2500 | 2621 | 2755 | 2862 | 3056 | 3271 | 3438 | 3545 | 3606 | 3827 | 4135 | 4805 |
Better Fuel Economy Factory Ratios Increased Power
