Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/60-20 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.46 (850) | 35.02 (889.6) | 1.56 (39.6) 4.7% |
| Width inches (mm) | 11.22 (285) | 12.52 (318) | 1.3 (33) 11.6% |
| Circum. inches (mm) | 105.13 (2670.35) | 110.03 (2794.76) | 4.9 (124.41) 4.7% |
| Sidewall Height inches (mm) | 6.73 (171) | 7.51 (190.8) | 0.78 (19.8) 11.6% |
| Revolutions per mile (km) | 602.67 (374.48) | 575.84 (357.81) | -26.83 (-16.67) -4.5% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.93 mph (33.69 km/h) |
| 25 mph (40.23 km/h) | 26.16 mph (42.11 km/h) |
| 30 mph (48.28 km/h) | 31.4 mph (50.53 km/h) |
| 35 mph (56.33 km/h) | 36.63 mph (58.95 km/h) |
| 40 mph (64.37 km/h) | 41.86 mph (67.37 km/h) |
| 45 mph (72.42 km/h) | 47.1 mph (75.79 km/h) |
| 50 mph (80.47 km/h) | 52.33 mph (84.22 km/h) |
| 55 mph (88.51 km/h) | 57.56 mph (92.64 km/h) |
| 60 mph (96.56 km/h) | 62.8 mph (101.06 km/h) |
| 65 mph (104.61 km/h) | 68.03 mph (109.48 km/h) |
| 70 mph (112.65 km/h) | 73.26 mph (117.9 km/h) |
| 75 mph (120.7 km/h) | 78.49 mph (126.32 km/h) |
| 80 mph (128.75 km/h) | 83.73 mph (134.75 km/h) |
| 85 mph (136.79 km/h) | 88.96 mph (143.17 km/h) |
| 90 mph (144.84 km/h) | 94.19 mph (151.59 km/h) |
| 95 mph (152.89 km/h) | 99.43 mph (160.01 km/h) |
| 100 mph (160.93 km/h) | 104.66 mph (168.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1465 | 1702 | 1833 | 1914 | 2002 | 2064 | 2133 | 2214 | 2326 | 2438 | 2563 | 2663 | 2844 | 3043 | 3199 | 3299 | 3355 | 3561 | 3847 | 4471 |
Better Fuel Economy Factory Ratios Increased Power
