Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 220/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 27.13 (689) | 0.05 (1.28) 0.2% |
| Width inches (mm) | 8.5 (216) | 8.66 (220) | 0.16 (4) 1.9% |
| Circum. inches (mm) | 85.06 (2160.54) | 85.22 (2164.56) | 0.16 (4.02) 0.2% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.06 (154) | 0.03 (0.64) 0.4% |
| Revolutions per mile (km) | 744.88 (462.85) | 743.5 (461.99) | -1.38 (-0.86) -0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.31 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.37 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.43 km/h) |
| 40 mph (64.37 km/h) | 40.07 mph (64.49 km/h) |
| 45 mph (72.42 km/h) | 45.08 mph (72.56 km/h) |
| 50 mph (80.47 km/h) | 50.09 mph (80.62 km/h) |
| 55 mph (88.51 km/h) | 55.1 mph (88.68 km/h) |
| 60 mph (96.56 km/h) | 60.11 mph (96.74 km/h) |
| 65 mph (104.61 km/h) | 65.12 mph (104.8 km/h) |
| 70 mph (112.65 km/h) | 70.13 mph (112.86 km/h) |
| 75 mph (120.7 km/h) | 75.14 mph (120.93 km/h) |
| 80 mph (128.75 km/h) | 80.15 mph (128.99 km/h) |
| 85 mph (136.79 km/h) | 85.16 mph (137.05 km/h) |
| 90 mph (144.84 km/h) | 90.17 mph (145.11 km/h) |
| 95 mph (152.89 km/h) | 95.18 mph (153.17 km/h) |
| 100 mph (160.93 km/h) | 100.19 mph (161.23 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
