Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/35-20 | 285/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.68 (728.5) | 27.85 (707.5) | -0.83 (-21) -2.9% |
| Width inches (mm) | 12.4 (315) | 11.22 (285) | -1.18 (-30) -9.5% |
| Circum. inches (mm) | 90.1 (2288.65) | 87.51 (2222.68) | -2.6 (-65.97) -2.9% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 3.93 (99.75) | -0.41 (-10.5) -9.5% |
| Revolutions per mile (km) | 703.18 (436.94) | 724.06 (449.91) | 20.87 (12.97) 3% |
285/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.42 mph (31.26 km/h) |
| 25 mph (40.23 km/h) | 24.28 mph (39.07 km/h) |
| 30 mph (48.28 km/h) | 29.14 mph (46.89 km/h) |
| 35 mph (56.33 km/h) | 33.99 mph (54.7 km/h) |
| 40 mph (64.37 km/h) | 38.85 mph (62.52 km/h) |
| 45 mph (72.42 km/h) | 43.7 mph (70.33 km/h) |
| 50 mph (80.47 km/h) | 48.56 mph (78.15 km/h) |
| 55 mph (88.51 km/h) | 53.41 mph (85.96 km/h) |
| 60 mph (96.56 km/h) | 58.27 mph (93.78 km/h) |
| 65 mph (104.61 km/h) | 63.13 mph (101.59 km/h) |
| 70 mph (112.65 km/h) | 67.98 mph (109.41 km/h) |
| 75 mph (120.7 km/h) | 72.84 mph (117.22 km/h) |
| 80 mph (128.75 km/h) | 77.69 mph (125.04 km/h) |
| 85 mph (136.79 km/h) | 82.55 mph (132.85 km/h) |
| 90 mph (144.84 km/h) | 87.41 mph (140.67 km/h) |
| 95 mph (152.89 km/h) | 92.26 mph (148.48 km/h) |
| 100 mph (160.93 km/h) | 97.12 mph (156.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1843 | 2141 | 2305 | 2407 | 2517 | 2595 | 2682 | 2783 | 2925 | 3066 | 3223 | 3348 | 3575 | 3826 | 4022 | 4148 | 4218 | 4477 | 4838 | 5622 |
Better Fuel Economy Factory Ratios Increased Power
