Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 155/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 22.93 (582.5) | -2.41 (-61.1) -9.5% |
| Width inches (mm) | 7.09 (180) | 6.1 (155) | -0.98 (-25) -13.9% |
| Circum. inches (mm) | 79.6 (2021.93) | 72.05 (1829.98) | -7.56 (-191.95) -9.5% |
| Sidewall Height inches (mm) | 5.67 (144) | 3.97 (100.75) | -1.7 (-43.25) -30% |
| Revolutions per mile (km) | 795.94 (494.58) | 879.43 (546.45) | 83.49 (51.88) 10.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.1 mph (29.13 km/h) |
| 25 mph (40.23 km/h) | 22.63 mph (36.41 km/h) |
| 30 mph (48.28 km/h) | 27.15 mph (43.7 km/h) |
| 35 mph (56.33 km/h) | 31.68 mph (50.98 km/h) |
| 40 mph (64.37 km/h) | 36.2 mph (58.26 km/h) |
| 45 mph (72.42 km/h) | 40.73 mph (65.55 km/h) |
| 50 mph (80.47 km/h) | 45.25 mph (72.83 km/h) |
| 55 mph (88.51 km/h) | 49.78 mph (80.11 km/h) |
| 60 mph (96.56 km/h) | 54.3 mph (87.39 km/h) |
| 65 mph (104.61 km/h) | 58.83 mph (94.68 km/h) |
| 70 mph (112.65 km/h) | 63.35 mph (101.96 km/h) |
| 75 mph (120.7 km/h) | 67.88 mph (109.24 km/h) |
| 80 mph (128.75 km/h) | 72.41 mph (116.53 km/h) |
| 85 mph (136.79 km/h) | 76.93 mph (123.81 km/h) |
| 90 mph (144.84 km/h) | 81.46 mph (131.09 km/h) |
| 95 mph (152.89 km/h) | 85.98 mph (138.37 km/h) |
| 100 mph (160.93 km/h) | 90.51 mph (145.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2238 | 2600 | 2800 | 2924 | 3057 | 3152 | 3257 | 3381 | 3552 | 3724 | 3914 | 4066 | 4343 | 4647 | 4885 | 5038 | 5124 | 5438 | 5876 | 6828 |
Better Fuel Economy Factory Ratios Increased Power
