Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-12 | 165/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.76 (552.8) | 22.39 (568.8) | 0.63 (16) 2.9% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 68.37 (1736.67) | 70.35 (1786.94) | 1.98 (50.27) 2.9% |
| Sidewall Height inches (mm) | 4.88 (124) | 5.2 (132) | 0.31 (8) 6.5% |
| Revolutions per mile (km) | 926.68 (575.81) | 900.62 (559.62) | -26.07 (-16.2) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.12 km/h) |
| 25 mph (40.23 km/h) | 25.72 mph (41.4 km/h) |
| 30 mph (48.28 km/h) | 30.87 mph (49.68 km/h) |
| 35 mph (56.33 km/h) | 36.01 mph (57.96 km/h) |
| 40 mph (64.37 km/h) | 41.16 mph (66.24 km/h) |
| 45 mph (72.42 km/h) | 46.3 mph (74.52 km/h) |
| 50 mph (80.47 km/h) | 51.45 mph (82.8 km/h) |
| 55 mph (88.51 km/h) | 56.59 mph (91.08 km/h) |
| 60 mph (96.56 km/h) | 61.74 mph (99.36 km/h) |
| 65 mph (104.61 km/h) | 66.88 mph (107.64 km/h) |
| 70 mph (112.65 km/h) | 72.03 mph (115.91 km/h) |
| 75 mph (120.7 km/h) | 77.17 mph (124.19 km/h) |
| 80 mph (128.75 km/h) | 82.32 mph (132.47 km/h) |
| 85 mph (136.79 km/h) | 87.46 mph (140.75 km/h) |
| 90 mph (144.84 km/h) | 92.6 mph (149.03 km/h) |
| 95 mph (152.89 km/h) | 97.75 mph (157.31 km/h) |
| 100 mph (160.93 km/h) | 102.89 mph (165.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2292 | 2662 | 2867 | 2994 | 3131 | 3228 | 3335 | 3462 | 3638 | 3813 | 4008 | 4164 | 4447 | 4759 | 5003 | 5159 | 5247 | 5569 | 6017 | 6993 |
Better Fuel Economy Factory Ratios Increased Power
