Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/45-22 | 285/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.81 (833.3) | 32.59 (827.7) | -0.22 (-5.6) -0.7% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 103.07 (2617.89) | 102.37 (2600.3) | -0.69 (-17.59) -0.7% |
| Sidewall Height inches (mm) | 5.4 (137.25) | 7.29 (185.25) | 1.89 (48) 35% |
| Revolutions per mile (km) | 614.75 (381.99) | 618.91 (384.57) | 4.16 (2.58) 0.7% |
285/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.87 mph (31.97 km/h) |
| 25 mph (40.23 km/h) | 24.83 mph (39.96 km/h) |
| 30 mph (48.28 km/h) | 29.8 mph (47.96 km/h) |
| 35 mph (56.33 km/h) | 34.76 mph (55.95 km/h) |
| 40 mph (64.37 km/h) | 39.73 mph (63.94 km/h) |
| 45 mph (72.42 km/h) | 44.7 mph (71.93 km/h) |
| 50 mph (80.47 km/h) | 49.66 mph (79.93 km/h) |
| 55 mph (88.51 km/h) | 54.63 mph (87.92 km/h) |
| 60 mph (96.56 km/h) | 59.6 mph (95.91 km/h) |
| 65 mph (104.61 km/h) | 64.56 mph (103.9 km/h) |
| 70 mph (112.65 km/h) | 69.53 mph (111.9 km/h) |
| 75 mph (120.7 km/h) | 74.5 mph (119.89 km/h) |
| 80 mph (128.75 km/h) | 79.46 mph (127.88 km/h) |
| 85 mph (136.79 km/h) | 84.43 mph (135.88 km/h) |
| 90 mph (144.84 km/h) | 89.4 mph (143.87 km/h) |
| 95 mph (152.89 km/h) | 94.36 mph (151.86 km/h) |
| 100 mph (160.93 km/h) | 99.33 mph (159.85 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
