Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/85-16 | 220/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 27.13 (689) | 1.76 (44.6) 6.9% |
| Width inches (mm) | 5.51 (140) | 8.66 (220) | 3.15 (80) 57.1% |
| Circum. inches (mm) | 79.7 (2024.44) | 85.22 (2164.56) | 5.52 (140.12) 6.9% |
| Sidewall Height inches (mm) | 4.69 (119) | 6.06 (154) | 1.38 (35) 29.4% |
| Revolutions per mile (km) | 794.96 (493.96) | 743.5 (461.99) | -51.46 (-31.97) -6.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.38 mph (34.41 km/h) |
| 25 mph (40.23 km/h) | 26.73 mph (43.02 km/h) |
| 30 mph (48.28 km/h) | 32.08 mph (51.62 km/h) |
| 35 mph (56.33 km/h) | 37.42 mph (60.23 km/h) |
| 40 mph (64.37 km/h) | 42.77 mph (68.83 km/h) |
| 45 mph (72.42 km/h) | 48.11 mph (77.43 km/h) |
| 50 mph (80.47 km/h) | 53.46 mph (86.04 km/h) |
| 55 mph (88.51 km/h) | 58.81 mph (94.64 km/h) |
| 60 mph (96.56 km/h) | 64.15 mph (103.24 km/h) |
| 65 mph (104.61 km/h) | 69.5 mph (111.85 km/h) |
| 70 mph (112.65 km/h) | 74.84 mph (120.45 km/h) |
| 75 mph (120.7 km/h) | 80.19 mph (129.05 km/h) |
| 80 mph (128.75 km/h) | 85.54 mph (137.66 km/h) |
| 85 mph (136.79 km/h) | 90.88 mph (146.26 km/h) |
| 90 mph (144.84 km/h) | 96.23 mph (154.87 km/h) |
| 95 mph (152.89 km/h) | 101.58 mph (163.47 km/h) |
| 100 mph (160.93 km/h) | 106.92 mph (172.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1892 | 2198 | 2367 | 2472 | 2584 | 2665 | 2754 | 2858 | 3003 | 3148 | 3309 | 3438 | 3671 | 3929 | 4130 | 4259 | 4332 | 4597 | 4968 | 5773 |
Better Fuel Economy Factory Ratios Increased Power
