Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-15 | 305/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.71 (780) | 33.01 (838.5) | 2.3 (58.5) 7.5% |
| Width inches (mm) | 11.22 (285) | 12.01 (305) | 0.79 (20) 7% |
| Circum. inches (mm) | 96.47 (2450.44) | 103.71 (2634.23) | 7.24 (183.78) 7.5% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 9.01 (228.75) | 1.15 (29.25) 14.7% |
| Revolutions per mile (km) | 656.76 (408.09) | 610.94 (379.62) | -45.82 (-28.47) -7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.5 mph (34.6 km/h) |
| 25 mph (40.23 km/h) | 26.88 mph (43.25 km/h) |
| 30 mph (48.28 km/h) | 32.25 mph (51.9 km/h) |
| 35 mph (56.33 km/h) | 37.63 mph (60.55 km/h) |
| 40 mph (64.37 km/h) | 43 mph (69.2 km/h) |
| 45 mph (72.42 km/h) | 48.38 mph (77.85 km/h) |
| 50 mph (80.47 km/h) | 53.75 mph (86.5 km/h) |
| 55 mph (88.51 km/h) | 59.13 mph (95.15 km/h) |
| 60 mph (96.56 km/h) | 64.5 mph (103.8 km/h) |
| 65 mph (104.61 km/h) | 69.88 mph (112.45 km/h) |
| 70 mph (112.65 km/h) | 75.25 mph (121.1 km/h) |
| 75 mph (120.7 km/h) | 80.63 mph (129.75 km/h) |
| 80 mph (128.75 km/h) | 86 mph (138.4 km/h) |
| 85 mph (136.79 km/h) | 91.38 mph (147.05 km/h) |
| 90 mph (144.84 km/h) | 96.75 mph (155.7 km/h) |
| 95 mph (152.89 km/h) | 102.13 mph (164.35 km/h) |
| 100 mph (160.93 km/h) | 107.5 mph (173 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1555 | 1806 | 1945 | 2031 | 2124 | 2190 | 2263 | 2349 | 2468 | 2587 | 2719 | 2825 | 3017 | 3229 | 3394 | 3500 | 3559 | 3778 | 4082 | 4744 |
Better Fuel Economy Factory Ratios Increased Power
