Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/80-15 | 170/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.82 (605) | 24.37 (619) | 0.55 (14) 2.3% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 74.83 (1900.66) | 76.56 (1944.65) | 1.73 (43.98) 2.3% |
| Sidewall Height inches (mm) | 4.41 (112) | 4.69 (119) | 0.28 (7) 6.3% |
| Revolutions per mile (km) | 846.73 (526.13) | 827.58 (514.23) | -19.15 (-11.9) -2.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.58 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.4 km/h) |
| 35 mph (56.33 km/h) | 35.81 mph (57.63 km/h) |
| 40 mph (64.37 km/h) | 40.93 mph (65.86 km/h) |
| 45 mph (72.42 km/h) | 46.04 mph (74.1 km/h) |
| 50 mph (80.47 km/h) | 51.16 mph (82.33 km/h) |
| 55 mph (88.51 km/h) | 56.27 mph (90.56 km/h) |
| 60 mph (96.56 km/h) | 61.39 mph (98.8 km/h) |
| 65 mph (104.61 km/h) | 66.5 mph (107.03 km/h) |
| 70 mph (112.65 km/h) | 71.62 mph (115.26 km/h) |
| 75 mph (120.7 km/h) | 76.74 mph (123.49 km/h) |
| 80 mph (128.75 km/h) | 81.85 mph (131.73 km/h) |
| 85 mph (136.79 km/h) | 86.97 mph (139.96 km/h) |
| 90 mph (144.84 km/h) | 92.08 mph (148.19 km/h) |
| 95 mph (152.89 km/h) | 97.2 mph (156.43 km/h) |
| 100 mph (160.93 km/h) | 102.31 mph (164.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2106 | 2447 | 2635 | 2751 | 2877 | 2966 | 3065 | 3181 | 3343 | 3504 | 3683 | 3827 | 4087 | 4373 | 4597 | 4741 | 4821 | 5117 | 5529 | 6426 |
Better Fuel Economy Factory Ratios Increased Power
