Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-14 | 185/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.13 (587.6) | 25.65 (651.6) | 2.52 (64) 10.9% |
| Width inches (mm) | 5.71 (145) | 7.28 (185) | 1.57 (40) 27.6% |
| Circum. inches (mm) | 72.68 (1846) | 80.59 (2047.06) | 7.92 (201.06) 10.9% |
| Sidewall Height inches (mm) | 4.57 (116) | 5.83 (148) | 1.26 (32) 27.6% |
| Revolutions per mile (km) | 871.8 (541.71) | 786.17 (488.5) | -85.63 (-53.21) -9.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.18 mph (35.69 km/h) |
| 25 mph (40.23 km/h) | 27.72 mph (44.62 km/h) |
| 30 mph (48.28 km/h) | 33.27 mph (53.54 km/h) |
| 35 mph (56.33 km/h) | 38.81 mph (62.46 km/h) |
| 40 mph (64.37 km/h) | 44.36 mph (71.39 km/h) |
| 45 mph (72.42 km/h) | 49.9 mph (80.31 km/h) |
| 50 mph (80.47 km/h) | 55.45 mph (89.23 km/h) |
| 55 mph (88.51 km/h) | 60.99 mph (98.15 km/h) |
| 60 mph (96.56 km/h) | 66.54 mph (107.08 km/h) |
| 65 mph (104.61 km/h) | 72.08 mph (116 km/h) |
| 70 mph (112.65 km/h) | 77.62 mph (124.92 km/h) |
| 75 mph (120.7 km/h) | 83.17 mph (133.85 km/h) |
| 80 mph (128.75 km/h) | 88.71 mph (142.77 km/h) |
| 85 mph (136.79 km/h) | 94.26 mph (151.69 km/h) |
| 90 mph (144.84 km/h) | 99.8 mph (160.62 km/h) |
| 95 mph (152.89 km/h) | 105.35 mph (169.54 km/h) |
| 100 mph (160.93 km/h) | 110.89 mph (178.46 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
