Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-12 | 155/65-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.54 (521.8) | 19.93 (506.3) | -0.61 (-15.5) -3% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 64.54 (1639.28) | 62.62 (1590.59) | -1.92 (-48.69) -3% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 3.97 (100.75) | -0.31 (-7.75) -7.1% |
| Revolutions per mile (km) | 981.74 (610.02) | 1011.79 (628.7) | 30.06 (18.68) 3.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.41 mph (31.23 km/h) |
| 25 mph (40.23 km/h) | 24.26 mph (39.04 km/h) |
| 30 mph (48.28 km/h) | 29.11 mph (46.85 km/h) |
| 35 mph (56.33 km/h) | 33.96 mph (54.65 km/h) |
| 40 mph (64.37 km/h) | 38.81 mph (62.46 km/h) |
| 45 mph (72.42 km/h) | 43.66 mph (70.27 km/h) |
| 50 mph (80.47 km/h) | 48.51 mph (78.08 km/h) |
| 55 mph (88.51 km/h) | 53.37 mph (85.88 km/h) |
| 60 mph (96.56 km/h) | 58.22 mph (93.69 km/h) |
| 65 mph (104.61 km/h) | 63.07 mph (101.5 km/h) |
| 70 mph (112.65 km/h) | 67.92 mph (109.31 km/h) |
| 75 mph (120.7 km/h) | 72.77 mph (117.12 km/h) |
| 80 mph (128.75 km/h) | 77.62 mph (124.92 km/h) |
| 85 mph (136.79 km/h) | 82.48 mph (132.73 km/h) |
| 90 mph (144.84 km/h) | 87.33 mph (140.54 km/h) |
| 95 mph (152.89 km/h) | 92.18 mph (148.35 km/h) |
| 100 mph (160.93 km/h) | 97.03 mph (156.15 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
