Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-12 | 155/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.8 (502.8) | 21.76 (552.8) | 1.97 (50) 9.9% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 62.19 (1579.59) | 68.37 (1736.67) | 6.18 (157.08) 9.9% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.88 (124) | 0.98 (25) 25.3% |
| Revolutions per mile (km) | 1018.83 (633.07) | 926.68 (575.81) | -92.15 (-57.26) -9% |
155/80-12 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.99 mph (35.39 km/h) |
| 25 mph (40.23 km/h) | 27.49 mph (44.23 km/h) |
| 30 mph (48.28 km/h) | 32.98 mph (53.08 km/h) |
| 35 mph (56.33 km/h) | 38.48 mph (61.93 km/h) |
| 40 mph (64.37 km/h) | 43.98 mph (70.78 km/h) |
| 45 mph (72.42 km/h) | 49.47 mph (79.62 km/h) |
| 50 mph (80.47 km/h) | 54.97 mph (88.47 km/h) |
| 55 mph (88.51 km/h) | 60.47 mph (97.32 km/h) |
| 60 mph (96.56 km/h) | 65.97 mph (106.16 km/h) |
| 65 mph (104.61 km/h) | 71.46 mph (115.01 km/h) |
| 70 mph (112.65 km/h) | 76.96 mph (123.86 km/h) |
| 75 mph (120.7 km/h) | 82.46 mph (132.7 km/h) |
| 80 mph (128.75 km/h) | 87.96 mph (141.55 km/h) |
| 85 mph (136.79 km/h) | 93.45 mph (150.4 km/h) |
| 90 mph (144.84 km/h) | 98.95 mph (159.24 km/h) |
| 95 mph (152.89 km/h) | 104.45 mph (168.09 km/h) |
| 100 mph (160.93 km/h) | 109.94 mph (176.94 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
