Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 300/100-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 43.62 (1108) | 0.63 (16) 1.5% |
| Width inches (mm) | 14.37 (365) | 11.81 (300) | -2.56 (-65) -17.8% |
| Circum. inches (mm) | 135.06 (3430.62) | 137.04 (3480.88) | 1.98 (50.27) 1.5% |
| Sidewall Height inches (mm) | 11.5 (292) | 11.81 (300) | 0.31 (8) 2.7% |
| Revolutions per mile (km) | 469.11 (291.49) | 462.34 (287.28) | -6.77 (-4.21) -1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.29 mph (32.66 km/h) |
| 25 mph (40.23 km/h) | 25.37 mph (40.82 km/h) |
| 30 mph (48.28 km/h) | 30.44 mph (48.99 km/h) |
| 35 mph (56.33 km/h) | 35.51 mph (57.15 km/h) |
| 40 mph (64.37 km/h) | 40.59 mph (65.32 km/h) |
| 45 mph (72.42 km/h) | 45.66 mph (73.48 km/h) |
| 50 mph (80.47 km/h) | 50.73 mph (81.65 km/h) |
| 55 mph (88.51 km/h) | 55.81 mph (89.81 km/h) |
| 60 mph (96.56 km/h) | 60.88 mph (97.98 km/h) |
| 65 mph (104.61 km/h) | 65.95 mph (106.14 km/h) |
| 70 mph (112.65 km/h) | 71.03 mph (114.3 km/h) |
| 75 mph (120.7 km/h) | 76.1 mph (122.47 km/h) |
| 80 mph (128.75 km/h) | 81.17 mph (130.63 km/h) |
| 85 mph (136.79 km/h) | 86.25 mph (138.8 km/h) |
| 90 mph (144.84 km/h) | 91.32 mph (146.96 km/h) |
| 95 mph (152.89 km/h) | 96.39 mph (155.13 km/h) |
| 100 mph (160.93 km/h) | 101.47 mph (163.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1177 | 1367 | 1472 | 1537 | 1607 | 1657 | 1712 | 1777 | 1867 | 1958 | 2058 | 2138 | 2283 | 2443 | 2568 | 2649 | 2694 | 2859 | 3089 | 3590 |
Better Fuel Economy Factory Ratios Increased Power
