Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/75-18 | 285/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.65 (854.7) | 32.59 (827.7) | -1.06 (-27) -3.2% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 105.71 (2685.12) | 102.37 (2600.3) | -3.34 (-84.82) -3.2% |
| Sidewall Height inches (mm) | 7.82 (198.75) | 7.29 (185.25) | -0.53 (-13.5) -6.8% |
| Revolutions per mile (km) | 599.36 (372.42) | 618.91 (384.57) | 19.55 (12.15) 3.3% |
285/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.37 mph (31.17 km/h) |
| 25 mph (40.23 km/h) | 24.21 mph (38.96 km/h) |
| 30 mph (48.28 km/h) | 29.05 mph (46.76 km/h) |
| 35 mph (56.33 km/h) | 33.89 mph (54.55 km/h) |
| 40 mph (64.37 km/h) | 38.74 mph (62.34 km/h) |
| 45 mph (72.42 km/h) | 43.58 mph (70.13 km/h) |
| 50 mph (80.47 km/h) | 48.42 mph (77.93 km/h) |
| 55 mph (88.51 km/h) | 53.26 mph (85.72 km/h) |
| 60 mph (96.56 km/h) | 58.1 mph (93.51 km/h) |
| 65 mph (104.61 km/h) | 62.95 mph (101.3 km/h) |
| 70 mph (112.65 km/h) | 67.79 mph (109.1 km/h) |
| 75 mph (120.7 km/h) | 72.63 mph (116.89 km/h) |
| 80 mph (128.75 km/h) | 77.47 mph (124.68 km/h) |
| 85 mph (136.79 km/h) | 82.31 mph (132.47 km/h) |
| 90 mph (144.84 km/h) | 87.16 mph (140.27 km/h) |
| 95 mph (152.89 km/h) | 92 mph (148.06 km/h) |
| 100 mph (160.93 km/h) | 96.84 mph (155.85 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
