Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/60-18 | 170/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 20.03 (508.8) | -4.58 (-116.4) -18.6% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 77.33 (1964.12) | 62.93 (1598.44) | -14.4 (-365.68) -18.6% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.02 (102) | 0.71 (18) 21.4% |
| Revolutions per mile (km) | 819.37 (509.13) | 1006.82 (625.61) | 187.45 (116.48) 22.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.28 mph (26.19 km/h) |
| 25 mph (40.23 km/h) | 20.35 mph (32.74 km/h) |
| 30 mph (48.28 km/h) | 24.41 mph (39.29 km/h) |
| 35 mph (56.33 km/h) | 28.48 mph (45.84 km/h) |
| 40 mph (64.37 km/h) | 32.55 mph (52.39 km/h) |
| 45 mph (72.42 km/h) | 36.62 mph (58.94 km/h) |
| 50 mph (80.47 km/h) | 40.69 mph (65.49 km/h) |
| 55 mph (88.51 km/h) | 44.76 mph (72.03 km/h) |
| 60 mph (96.56 km/h) | 48.83 mph (78.58 km/h) |
| 65 mph (104.61 km/h) | 52.9 mph (85.13 km/h) |
| 70 mph (112.65 km/h) | 56.97 mph (91.68 km/h) |
| 75 mph (120.7 km/h) | 61.04 mph (98.23 km/h) |
| 80 mph (128.75 km/h) | 65.11 mph (104.78 km/h) |
| 85 mph (136.79 km/h) | 69.17 mph (111.33 km/h) |
| 90 mph (144.84 km/h) | 73.24 mph (117.87 km/h) |
| 95 mph (152.89 km/h) | 77.31 mph (124.42 km/h) |
| 100 mph (160.93 km/h) | 81.38 mph (130.97 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
