Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 35/12-18 | 285/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.05 (890.3) | 32.59 (827.7) | -2.46 (-62.6) -7% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 110.12 (2796.96) | 102.37 (2600.3) | -7.74 (-196.66) -7% |
| Sidewall Height inches (mm) | 8.53 (216.55) | 7.29 (185.25) | -1.23 (-31.3) -14.5% |
| Revolutions per mile (km) | 575.39 (357.53) | 618.91 (384.57) | 43.52 (27.04) 7.6% |
285/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.59 mph (29.92 km/h) |
| 25 mph (40.23 km/h) | 23.24 mph (37.4 km/h) |
| 30 mph (48.28 km/h) | 27.89 mph (44.89 km/h) |
| 35 mph (56.33 km/h) | 32.54 mph (52.37 km/h) |
| 40 mph (64.37 km/h) | 37.19 mph (59.85 km/h) |
| 45 mph (72.42 km/h) | 41.84 mph (67.33 km/h) |
| 50 mph (80.47 km/h) | 46.48 mph (74.81 km/h) |
| 55 mph (88.51 km/h) | 51.13 mph (82.29 km/h) |
| 60 mph (96.56 km/h) | 55.78 mph (89.77 km/h) |
| 65 mph (104.61 km/h) | 60.43 mph (97.25 km/h) |
| 70 mph (112.65 km/h) | 65.08 mph (104.73 km/h) |
| 75 mph (120.7 km/h) | 69.73 mph (112.21 km/h) |
| 80 mph (128.75 km/h) | 74.37 mph (119.7 km/h) |
| 85 mph (136.79 km/h) | 79.02 mph (127.18 km/h) |
| 90 mph (144.84 km/h) | 83.67 mph (134.66 km/h) |
| 95 mph (152.89 km/h) | 88.32 mph (142.14 km/h) |
| 100 mph (160.93 km/h) | 92.97 mph (149.62 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
