Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-20 | 35/11.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.71 (907) | 34.94 (887.6) | -0.76 (-19.4) -2.1% |
| Width inches (mm) | 11.22 (285) | 11.5 (292) | 0.28 (7) 2.5% |
| Circum. inches (mm) | 112.18 (2849.42) | 109.78 (2788.48) | -2.4 (-60.95) -2.1% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 7.47 (189.8) | -0.38 (-9.7) -4.9% |
| Revolutions per mile (km) | 564.8 (350.95) | 577.14 (358.62) | 12.34 (7.67) 2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.57 mph (31.5 km/h) |
| 25 mph (40.23 km/h) | 24.47 mph (39.37 km/h) |
| 30 mph (48.28 km/h) | 29.36 mph (47.25 km/h) |
| 35 mph (56.33 km/h) | 34.25 mph (55.12 km/h) |
| 40 mph (64.37 km/h) | 39.14 mph (63 km/h) |
| 45 mph (72.42 km/h) | 44.04 mph (70.87 km/h) |
| 50 mph (80.47 km/h) | 48.93 mph (78.75 km/h) |
| 55 mph (88.51 km/h) | 53.82 mph (86.62 km/h) |
| 60 mph (96.56 km/h) | 58.72 mph (94.5 km/h) |
| 65 mph (104.61 km/h) | 63.61 mph (102.37 km/h) |
| 70 mph (112.65 km/h) | 68.5 mph (110.24 km/h) |
| 75 mph (120.7 km/h) | 73.4 mph (118.12 km/h) |
| 80 mph (128.75 km/h) | 78.29 mph (125.99 km/h) |
| 85 mph (136.79 km/h) | 83.18 mph (133.87 km/h) |
| 90 mph (144.84 km/h) | 88.07 mph (141.74 km/h) |
| 95 mph (152.89 km/h) | 92.97 mph (149.62 km/h) |
| 100 mph (160.93 km/h) | 97.86 mph (157.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1469 | 1706 | 1837 | 1919 | 2006 | 2069 | 2137 | 2219 | 2331 | 2444 | 2569 | 2669 | 2850 | 3050 | 3206 | 3306 | 3362 | 3569 | 3856 | 4481 |
Better Fuel Economy Factory Ratios Increased Power
