Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/70-12 | 155/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.8) | 21.76 (552.8) | 0.67 (17) 3.2% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 66.27 (1683.27) | 68.37 (1736.67) | 2.1 (53.41) 3.2% |
| Sidewall Height inches (mm) | 4.55 (115.5) | 4.88 (124) | 0.33 (8.5) 7.4% |
| Revolutions per mile (km) | 956.08 (594.08) | 926.68 (575.81) | -29.4 (-18.27) -3.1% |
155/80-12 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.63 mph (33.21 km/h) |
| 25 mph (40.23 km/h) | 25.79 mph (41.51 km/h) |
| 30 mph (48.28 km/h) | 30.95 mph (49.81 km/h) |
| 35 mph (56.33 km/h) | 36.11 mph (58.11 km/h) |
| 40 mph (64.37 km/h) | 41.27 mph (66.42 km/h) |
| 45 mph (72.42 km/h) | 46.43 mph (74.72 km/h) |
| 50 mph (80.47 km/h) | 51.59 mph (83.02 km/h) |
| 55 mph (88.51 km/h) | 56.75 mph (91.32 km/h) |
| 60 mph (96.56 km/h) | 61.9 mph (99.62 km/h) |
| 65 mph (104.61 km/h) | 67.06 mph (107.93 km/h) |
| 70 mph (112.65 km/h) | 72.22 mph (116.23 km/h) |
| 75 mph (120.7 km/h) | 77.38 mph (124.53 km/h) |
| 80 mph (128.75 km/h) | 82.54 mph (132.83 km/h) |
| 85 mph (136.79 km/h) | 87.7 mph (141.13 km/h) |
| 90 mph (144.84 km/h) | 92.86 mph (149.44 km/h) |
| 95 mph (152.89 km/h) | 98.01 mph (157.74 km/h) |
| 100 mph (160.93 km/h) | 103.17 mph (166.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
