Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-14 | 170/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.71 (526.1) | 22.7 (576.6) | 1.99 (50.5) 9.6% |
| Width inches (mm) | 6.1 (155) | 6.69 (170) | 0.59 (15) 9.7% |
| Circum. inches (mm) | 65.07 (1652.79) | 71.32 (1811.44) | 6.25 (158.65) 9.6% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 4.35 (110.5) | 0.99 (25.25) 29.6% |
| Revolutions per mile (km) | 973.71 (605.04) | 888.43 (552.05) | -85.28 (-52.99) -8.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.92 mph (35.28 km/h) |
| 25 mph (40.23 km/h) | 27.4 mph (44.1 km/h) |
| 30 mph (48.28 km/h) | 32.88 mph (52.91 km/h) |
| 35 mph (56.33 km/h) | 38.36 mph (61.73 km/h) |
| 40 mph (64.37 km/h) | 43.84 mph (70.55 km/h) |
| 45 mph (72.42 km/h) | 49.32 mph (79.37 km/h) |
| 50 mph (80.47 km/h) | 54.8 mph (88.19 km/h) |
| 55 mph (88.51 km/h) | 60.28 mph (97.01 km/h) |
| 60 mph (96.56 km/h) | 65.76 mph (105.83 km/h) |
| 65 mph (104.61 km/h) | 71.24 mph (114.65 km/h) |
| 70 mph (112.65 km/h) | 76.72 mph (123.47 km/h) |
| 75 mph (120.7 km/h) | 82.2 mph (132.29 km/h) |
| 80 mph (128.75 km/h) | 87.68 mph (141.11 km/h) |
| 85 mph (136.79 km/h) | 93.16 mph (149.93 km/h) |
| 90 mph (144.84 km/h) | 98.64 mph (158.74 km/h) |
| 95 mph (152.89 km/h) | 104.12 mph (167.56 km/h) |
| 100 mph (160.93 km/h) | 109.6 mph (176.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2261 | 2626 | 2829 | 2954 | 3088 | 3184 | 3290 | 3415 | 3589 | 3762 | 3954 | 4108 | 4387 | 4695 | 4935 | 5089 | 5176 | 5493 | 5936 | 6898 |
Better Fuel Economy Factory Ratios Increased Power
