Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/80-15 | 170/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.82 (605) | 25.71 (653) | 1.89 (48) 7.9% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 74.83 (1900.66) | 80.77 (2051.46) | 5.94 (150.8) 7.9% |
| Sidewall Height inches (mm) | 4.41 (112) | 5.35 (136) | 0.94 (24) 21.4% |
| Revolutions per mile (km) | 846.73 (526.13) | 784.49 (487.46) | -62.24 (-38.67) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.59 mph (34.74 km/h) |
| 25 mph (40.23 km/h) | 26.98 mph (43.43 km/h) |
| 30 mph (48.28 km/h) | 32.38 mph (52.11 km/h) |
| 35 mph (56.33 km/h) | 37.78 mph (60.8 km/h) |
| 40 mph (64.37 km/h) | 43.17 mph (69.48 km/h) |
| 45 mph (72.42 km/h) | 48.57 mph (78.17 km/h) |
| 50 mph (80.47 km/h) | 53.97 mph (86.85 km/h) |
| 55 mph (88.51 km/h) | 59.36 mph (95.54 km/h) |
| 60 mph (96.56 km/h) | 64.76 mph (104.22 km/h) |
| 65 mph (104.61 km/h) | 70.16 mph (112.91 km/h) |
| 70 mph (112.65 km/h) | 75.55 mph (121.59 km/h) |
| 75 mph (120.7 km/h) | 80.95 mph (130.28 km/h) |
| 80 mph (128.75 km/h) | 86.35 mph (138.96 km/h) |
| 85 mph (136.79 km/h) | 91.74 mph (147.65 km/h) |
| 90 mph (144.84 km/h) | 97.14 mph (156.33 km/h) |
| 95 mph (152.89 km/h) | 102.54 mph (165.02 km/h) |
| 100 mph (160.93 km/h) | 107.93 mph (173.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 2319 | 2498 | 2608 | 2727 | 2812 | 2905 | 3016 | 3169 | 3322 | 3492 | 3627 | 3874 | 4146 | 4358 | 4494 | 4570 | 4851 | 5242 | 6091 |
Better Fuel Economy Factory Ratios Increased Power
