Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 170/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 25.71 (653) | -0.69 (-17.4) -2.6% |
| Width inches (mm) | 9.45 (240) | 6.69 (170) | -2.76 (-70) -29.2% |
| Circum. inches (mm) | 82.92 (2106.12) | 80.77 (2051.46) | -2.15 (-54.66) -2.6% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.35 (136) | 0.16 (4) 3% |
| Revolutions per mile (km) | 764.13 (474.81) | 784.49 (487.46) | 20.36 (12.65) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.35 km/h) |
| 25 mph (40.23 km/h) | 24.35 mph (39.19 km/h) |
| 30 mph (48.28 km/h) | 29.22 mph (47.03 km/h) |
| 35 mph (56.33 km/h) | 34.09 mph (54.87 km/h) |
| 40 mph (64.37 km/h) | 38.96 mph (62.7 km/h) |
| 45 mph (72.42 km/h) | 43.83 mph (70.54 km/h) |
| 50 mph (80.47 km/h) | 48.7 mph (78.38 km/h) |
| 55 mph (88.51 km/h) | 53.57 mph (86.22 km/h) |
| 60 mph (96.56 km/h) | 58.44 mph (94.05 km/h) |
| 65 mph (104.61 km/h) | 63.31 mph (101.89 km/h) |
| 70 mph (112.65 km/h) | 68.18 mph (109.73 km/h) |
| 75 mph (120.7 km/h) | 73.05 mph (117.57 km/h) |
| 80 mph (128.75 km/h) | 77.92 mph (125.41 km/h) |
| 85 mph (136.79 km/h) | 82.79 mph (133.24 km/h) |
| 90 mph (144.84 km/h) | 87.66 mph (141.08 km/h) |
| 95 mph (152.89 km/h) | 92.53 mph (148.92 km/h) |
| 100 mph (160.93 km/h) | 97.4 mph (156.76 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
