Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-12 | 155/75-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.76 (552.8) | 21.15 (537.3) | -0.61 (-15.5) -2.8% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 68.37 (1736.67) | 66.46 (1687.98) | -1.92 (-48.69) -2.8% |
| Sidewall Height inches (mm) | 4.88 (124) | 4.58 (116.25) | -0.31 (-7.75) -6.3% |
| Revolutions per mile (km) | 926.68 (575.81) | 953.42 (592.42) | 26.73 (16.61) 2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.44 mph (31.28 km/h) |
| 25 mph (40.23 km/h) | 24.3 mph (39.11 km/h) |
| 30 mph (48.28 km/h) | 29.16 mph (46.93 km/h) |
| 35 mph (56.33 km/h) | 34.02 mph (54.75 km/h) |
| 40 mph (64.37 km/h) | 38.88 mph (62.57 km/h) |
| 45 mph (72.42 km/h) | 43.74 mph (70.39 km/h) |
| 50 mph (80.47 km/h) | 48.6 mph (78.21 km/h) |
| 55 mph (88.51 km/h) | 53.46 mph (86.03 km/h) |
| 60 mph (96.56 km/h) | 58.32 mph (93.85 km/h) |
| 65 mph (104.61 km/h) | 63.18 mph (101.67 km/h) |
| 70 mph (112.65 km/h) | 68.04 mph (109.5 km/h) |
| 75 mph (120.7 km/h) | 72.9 mph (117.32 km/h) |
| 80 mph (128.75 km/h) | 77.76 mph (125.14 km/h) |
| 85 mph (136.79 km/h) | 82.62 mph (132.96 km/h) |
| 90 mph (144.84 km/h) | 87.48 mph (140.78 km/h) |
| 95 mph (152.89 km/h) | 92.34 mph (148.6 km/h) |
| 100 mph (160.93 km/h) | 97.2 mph (156.42 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
