Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-12 | 178/60-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.8 (502.8) | 21.41 (543.8) | 1.61 (41) 8.2% |
| Width inches (mm) | 6.5 (165) | 7.01 (178) | 0.51 (13) 7.9% |
| Circum. inches (mm) | 62.19 (1579.59) | 67.26 (1708.4) | 5.07 (128.81) 8.2% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.2 (106.8) | 0.31 (7.8) 7.9% |
| Revolutions per mile (km) | 1018.83 (633.07) | 942.02 (585.34) | -76.82 (-47.73) -7.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.63 mph (34.81 km/h) |
| 25 mph (40.23 km/h) | 27.04 mph (43.51 km/h) |
| 30 mph (48.28 km/h) | 32.45 mph (52.22 km/h) |
| 35 mph (56.33 km/h) | 37.85 mph (60.92 km/h) |
| 40 mph (64.37 km/h) | 43.26 mph (69.62 km/h) |
| 45 mph (72.42 km/h) | 48.67 mph (78.33 km/h) |
| 50 mph (80.47 km/h) | 54.08 mph (87.03 km/h) |
| 55 mph (88.51 km/h) | 59.48 mph (95.73 km/h) |
| 60 mph (96.56 km/h) | 64.89 mph (104.43 km/h) |
| 65 mph (104.61 km/h) | 70.3 mph (113.14 km/h) |
| 70 mph (112.65 km/h) | 75.71 mph (121.84 km/h) |
| 75 mph (120.7 km/h) | 81.12 mph (130.54 km/h) |
| 80 mph (128.75 km/h) | 86.52 mph (139.25 km/h) |
| 85 mph (136.79 km/h) | 91.93 mph (147.95 km/h) |
| 90 mph (144.84 km/h) | 97.34 mph (156.65 km/h) |
| 95 mph (152.89 km/h) | 102.75 mph (165.35 km/h) |
| 100 mph (160.93 km/h) | 108.15 mph (174.06 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
