Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-14 | 185/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.71 (526.1) | 25.65 (651.6) | 4.94 (125.5) 23.9% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 65.07 (1652.79) | 80.59 (2047.06) | 15.52 (394.27) 23.9% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 5.83 (148) | 2.47 (62.75) 73.6% |
| Revolutions per mile (km) | 973.71 (605.04) | 786.17 (488.5) | -187.54 (-116.53) -19.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.77 mph (39.87 km/h) |
| 25 mph (40.23 km/h) | 30.96 mph (49.83 km/h) |
| 30 mph (48.28 km/h) | 37.16 mph (59.8 km/h) |
| 35 mph (56.33 km/h) | 43.35 mph (69.76 km/h) |
| 40 mph (64.37 km/h) | 49.54 mph (79.73 km/h) |
| 45 mph (72.42 km/h) | 55.73 mph (89.7 km/h) |
| 50 mph (80.47 km/h) | 61.93 mph (99.66 km/h) |
| 55 mph (88.51 km/h) | 68.12 mph (109.63 km/h) |
| 60 mph (96.56 km/h) | 74.31 mph (119.6 km/h) |
| 65 mph (104.61 km/h) | 80.51 mph (129.56 km/h) |
| 70 mph (112.65 km/h) | 86.7 mph (139.53 km/h) |
| 75 mph (120.7 km/h) | 92.89 mph (149.49 km/h) |
| 80 mph (128.75 km/h) | 99.08 mph (159.46 km/h) |
| 85 mph (136.79 km/h) | 105.28 mph (169.43 km/h) |
| 90 mph (144.84 km/h) | 111.47 mph (179.39 km/h) |
| 95 mph (152.89 km/h) | 117.66 mph (189.36 km/h) |
| 100 mph (160.93 km/h) | 123.85 mph (199.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | 2324 | 2503 | 2614 | 2733 | 2818 | 2912 | 3022 | 3176 | 3329 | 3499 | 3635 | 3882 | 4155 | 4367 | 4504 | 4580 | 4861 | 5253 | 6104 |
Better Fuel Economy Factory Ratios Increased Power
