Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/60-15 | 320/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.56 (573) | 28.86 (733) | 6.3 (160) 27.9% |
| Width inches (mm) | 6.3 (160) | 12.6 (320) | 6.3 (160) 100% |
| Circum. inches (mm) | 70.87 (1800.13) | 90.66 (2302.79) | 19.79 (502.65) 27.9% |
| Sidewall Height inches (mm) | 3.78 (96) | 6.93 (176) | 3.15 (80) 83.3% |
| Revolutions per mile (km) | 894.01 (555.51) | 698.87 (434.26) | -195.15 (-121.26) -21.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.58 mph (41.17 km/h) |
| 25 mph (40.23 km/h) | 31.98 mph (51.47 km/h) |
| 30 mph (48.28 km/h) | 38.38 mph (61.76 km/h) |
| 35 mph (56.33 km/h) | 44.77 mph (72.06 km/h) |
| 40 mph (64.37 km/h) | 51.17 mph (82.35 km/h) |
| 45 mph (72.42 km/h) | 57.57 mph (92.64 km/h) |
| 50 mph (80.47 km/h) | 63.96 mph (102.94 km/h) |
| 55 mph (88.51 km/h) | 70.36 mph (113.23 km/h) |
| 60 mph (96.56 km/h) | 76.75 mph (123.52 km/h) |
| 65 mph (104.61 km/h) | 83.15 mph (133.82 km/h) |
| 70 mph (112.65 km/h) | 89.55 mph (144.11 km/h) |
| 75 mph (120.7 km/h) | 95.94 mph (154.4 km/h) |
| 80 mph (128.75 km/h) | 102.34 mph (164.7 km/h) |
| 85 mph (136.79 km/h) | 108.73 mph (174.99 km/h) |
| 90 mph (144.84 km/h) | 115.13 mph (185.29 km/h) |
| 95 mph (152.89 km/h) | 121.53 mph (195.58 km/h) |
| 100 mph (160.93 km/h) | 127.92 mph (205.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1778 | 2066 | 2225 | 2323 | 2429 | 2505 | 2588 | 2687 | 2823 | 2959 | 3110 | 3232 | 3451 | 3693 | 3882 | 4003 | 4072 | 4321 | 4669 | 5426 |
Better Fuel Economy Factory Ratios Increased Power
