Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 275/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 37.32 (948) | -9.11 (-231.5) -19.6% |
| Width inches (mm) | 15.55 (395) | 10.83 (275) | -4.72 (-120) -30.4% |
| Circum. inches (mm) | 145.89 (3705.51) | 117.25 (2978.23) | -28.63 (-727.28) -19.6% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 8.66 (220) | -4.56 (-115.75) -34.5% |
| Revolutions per mile (km) | 434.31 (269.87) | 540.37 (335.77) | 106.06 (65.9) 24.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.07 mph (25.87 km/h) |
| 25 mph (40.23 km/h) | 20.09 mph (32.34 km/h) |
| 30 mph (48.28 km/h) | 24.11 mph (38.8 km/h) |
| 35 mph (56.33 km/h) | 28.13 mph (45.27 km/h) |
| 40 mph (64.37 km/h) | 32.15 mph (51.74 km/h) |
| 45 mph (72.42 km/h) | 36.17 mph (58.21 km/h) |
| 50 mph (80.47 km/h) | 40.19 mph (64.67 km/h) |
| 55 mph (88.51 km/h) | 44.21 mph (71.14 km/h) |
| 60 mph (96.56 km/h) | 48.22 mph (77.61 km/h) |
| 65 mph (104.61 km/h) | 52.24 mph (84.08 km/h) |
| 70 mph (112.65 km/h) | 56.26 mph (90.54 km/h) |
| 75 mph (120.7 km/h) | 60.28 mph (97.01 km/h) |
| 80 mph (128.75 km/h) | 64.3 mph (103.48 km/h) |
| 85 mph (136.79 km/h) | 68.32 mph (109.95 km/h) |
| 90 mph (144.84 km/h) | 72.34 mph (116.41 km/h) |
| 95 mph (152.89 km/h) | 76.35 mph (122.88 km/h) |
| 100 mph (160.93 km/h) | 80.37 mph (129.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1375 | 1597 | 1720 | 1796 | 1878 | 1937 | 2001 | 2077 | 2183 | 2288 | 2405 | 2499 | 2668 | 2856 | 3002 | 3096 | 3148 | 3341 | 3610 | 4196 |
Better Fuel Economy Factory Ratios Increased Power
