Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 35.02 (889.6) | -11.41 (-289.9) -24.6% |
| Width inches (mm) | 15.55 (395) | 12.52 (318) | -3.03 (-77) -19.5% |
| Circum. inches (mm) | 145.89 (3705.51) | 110.03 (2794.76) | -35.86 (-910.75) -24.6% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 7.51 (190.8) | -5.71 (-144.95) -43.2% |
| Revolutions per mile (km) | 434.31 (269.87) | 575.84 (357.81) | 141.53 (87.94) 32.6% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 15.08 mph (24.28 km/h) |
| 25 mph (40.23 km/h) | 18.86 mph (30.34 km/h) |
| 30 mph (48.28 km/h) | 22.63 mph (36.41 km/h) |
| 35 mph (56.33 km/h) | 26.4 mph (42.48 km/h) |
| 40 mph (64.37 km/h) | 30.17 mph (48.55 km/h) |
| 45 mph (72.42 km/h) | 33.94 mph (54.62 km/h) |
| 50 mph (80.47 km/h) | 37.71 mph (60.69 km/h) |
| 55 mph (88.51 km/h) | 41.48 mph (66.76 km/h) |
| 60 mph (96.56 km/h) | 45.25 mph (72.83 km/h) |
| 65 mph (104.61 km/h) | 49.02 mph (78.9 km/h) |
| 70 mph (112.65 km/h) | 52.8 mph (84.97 km/h) |
| 75 mph (120.7 km/h) | 56.57 mph (91.03 km/h) |
| 80 mph (128.75 km/h) | 60.34 mph (97.1 km/h) |
| 85 mph (136.79 km/h) | 64.11 mph (103.17 km/h) |
| 90 mph (144.84 km/h) | 67.88 mph (109.24 km/h) |
| 95 mph (152.89 km/h) | 71.65 mph (115.31 km/h) |
| 100 mph (160.93 km/h) | 75.42 mph (121.38 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
