Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-18 | 285/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.7) | 28.1 (713.7) | 0.71 (18) 2.6% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 86.05 (2185.61) | 88.27 (2242.15) | 2.23 (56.55) 2.6% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 5.05 (128.25) | 0.35 (9) 7.5% |
| Revolutions per mile (km) | 736.34 (457.54) | 717.77 (446) | -18.57 (-11.54) -2.5% |
285/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.02 km/h) |
| 25 mph (40.23 km/h) | 25.65 mph (41.27 km/h) |
| 30 mph (48.28 km/h) | 30.78 mph (49.53 km/h) |
| 35 mph (56.33 km/h) | 35.91 mph (57.78 km/h) |
| 40 mph (64.37 km/h) | 41.03 mph (66.04 km/h) |
| 45 mph (72.42 km/h) | 46.16 mph (74.29 km/h) |
| 50 mph (80.47 km/h) | 51.29 mph (82.55 km/h) |
| 55 mph (88.51 km/h) | 56.42 mph (90.8 km/h) |
| 60 mph (96.56 km/h) | 61.55 mph (99.06 km/h) |
| 65 mph (104.61 km/h) | 66.68 mph (107.31 km/h) |
| 70 mph (112.65 km/h) | 71.81 mph (115.57 km/h) |
| 75 mph (120.7 km/h) | 76.94 mph (123.82 km/h) |
| 80 mph (128.75 km/h) | 82.07 mph (132.08 km/h) |
| 85 mph (136.79 km/h) | 87.2 mph (140.33 km/h) |
| 90 mph (144.84 km/h) | 92.33 mph (148.59 km/h) |
| 95 mph (152.89 km/h) | 97.46 mph (156.84 km/h) |
| 100 mph (160.93 km/h) | 102.59 mph (165.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1827 | 2122 | 2285 | 2386 | 2495 | 2573 | 2658 | 2759 | 2899 | 3039 | 3195 | 3319 | 3544 | 3793 | 3987 | 4112 | 4182 | 4438 | 4796 | 5573 |
Better Fuel Economy Factory Ratios Increased Power
