Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/60-18 | 285/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.46 (799.2) | 32.59 (827.7) | 1.12 (28.5) 3.6% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 98.85 (2510.76) | 102.37 (2600.3) | 3.53 (89.54) 3.6% |
| Sidewall Height inches (mm) | 6.73 (171) | 7.29 (185.25) | 0.56 (14.25) 8.3% |
| Revolutions per mile (km) | 640.98 (398.28) | 618.91 (384.57) | -22.07 (-13.71) -3.4% |
285/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.71 mph (33.33 km/h) |
| 25 mph (40.23 km/h) | 25.89 mph (41.67 km/h) |
| 30 mph (48.28 km/h) | 31.07 mph (50 km/h) |
| 35 mph (56.33 km/h) | 36.25 mph (58.34 km/h) |
| 40 mph (64.37 km/h) | 41.43 mph (66.67 km/h) |
| 45 mph (72.42 km/h) | 46.6 mph (75 km/h) |
| 50 mph (80.47 km/h) | 51.78 mph (83.34 km/h) |
| 55 mph (88.51 km/h) | 56.96 mph (91.67 km/h) |
| 60 mph (96.56 km/h) | 62.14 mph (100 km/h) |
| 65 mph (104.61 km/h) | 67.32 mph (108.34 km/h) |
| 70 mph (112.65 km/h) | 72.5 mph (116.67 km/h) |
| 75 mph (120.7 km/h) | 77.67 mph (125.01 km/h) |
| 80 mph (128.75 km/h) | 82.85 mph (133.34 km/h) |
| 85 mph (136.79 km/h) | 88.03 mph (141.67 km/h) |
| 90 mph (144.84 km/h) | 93.21 mph (150.01 km/h) |
| 95 mph (152.89 km/h) | 98.39 mph (158.34 km/h) |
| 100 mph (160.93 km/h) | 103.57 mph (166.67 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
