Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/30-19 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.73 (653.6) | 25.85 (656.7) | 0.12 (3.1) 0.5% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 80.84 (2053.34) | 81.22 (2063.08) | 0.38 (9.74) 0.5% |
| Sidewall Height inches (mm) | 3.37 (85.5) | 3.93 (99.75) | 0.56 (14.25) 16.7% |
| Revolutions per mile (km) | 783.77 (487.01) | 780.07 (484.71) | -3.7 (-2.3) -0.5% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.34 km/h) |
| 25 mph (40.23 km/h) | 25.12 mph (40.42 km/h) |
| 30 mph (48.28 km/h) | 30.14 mph (48.51 km/h) |
| 35 mph (56.33 km/h) | 35.17 mph (56.59 km/h) |
| 40 mph (64.37 km/h) | 40.19 mph (64.68 km/h) |
| 45 mph (72.42 km/h) | 45.21 mph (72.76 km/h) |
| 50 mph (80.47 km/h) | 50.24 mph (80.85 km/h) |
| 55 mph (88.51 km/h) | 55.26 mph (88.93 km/h) |
| 60 mph (96.56 km/h) | 60.28 mph (97.02 km/h) |
| 65 mph (104.61 km/h) | 65.31 mph (105.1 km/h) |
| 70 mph (112.65 km/h) | 70.33 mph (113.19 km/h) |
| 75 mph (120.7 km/h) | 75.36 mph (121.27 km/h) |
| 80 mph (128.75 km/h) | 80.38 mph (129.36 km/h) |
| 85 mph (136.79 km/h) | 85.4 mph (137.44 km/h) |
| 90 mph (144.84 km/h) | 90.43 mph (145.53 km/h) |
| 95 mph (152.89 km/h) | 95.45 mph (153.61 km/h) |
| 100 mph (160.93 km/h) | 100.47 mph (161.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 2306 | 2484 | 2593 | 2712 | 2796 | 2889 | 2999 | 3151 | 3303 | 3472 | 3607 | 3852 | 4122 | 4333 | 4469 | 4545 | 4823 | 5212 | 6057 |
Better Fuel Economy Factory Ratios Increased Power
