Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-10 | 255/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.03 (458) | 23.04 (585.3) | 5.01 (127.3) 27.8% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 56.65 (1438.85) | 72.39 (1838.77) | 15.75 (399.92) 27.8% |
| Sidewall Height inches (mm) | 4.02 (102) | 5.52 (140.25) | 1.51 (38.25) 37.5% |
| Revolutions per mile (km) | 1118.49 (695) | 875.23 (543.84) | -243.27 (-151.16) -21.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.56 mph (41.13 km/h) |
| 25 mph (40.23 km/h) | 31.95 mph (51.42 km/h) |
| 30 mph (48.28 km/h) | 38.34 mph (61.7 km/h) |
| 35 mph (56.33 km/h) | 44.73 mph (71.98 km/h) |
| 40 mph (64.37 km/h) | 51.12 mph (82.27 km/h) |
| 45 mph (72.42 km/h) | 57.51 mph (92.55 km/h) |
| 50 mph (80.47 km/h) | 63.9 mph (102.83 km/h) |
| 55 mph (88.51 km/h) | 70.29 mph (113.12 km/h) |
| 60 mph (96.56 km/h) | 76.68 mph (123.4 km/h) |
| 65 mph (104.61 km/h) | 83.07 mph (133.68 km/h) |
| 70 mph (112.65 km/h) | 89.46 mph (143.97 km/h) |
| 75 mph (120.7 km/h) | 95.85 mph (154.25 km/h) |
| 80 mph (128.75 km/h) | 102.24 mph (164.53 km/h) |
| 85 mph (136.79 km/h) | 108.63 mph (174.82 km/h) |
| 90 mph (144.84 km/h) | 115.02 mph (185.1 km/h) |
| 95 mph (152.89 km/h) | 121.41 mph (195.38 km/h) |
| 100 mph (160.93 km/h) | 127.79 mph (205.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2227 | 2587 | 2786 | 2910 | 3042 | 3137 | 3241 | 3365 | 3535 | 3706 | 3895 | 4047 | 4322 | 4625 | 4862 | 5014 | 5099 | 5412 | 5848 | 6796 |
Better Fuel Economy Factory Ratios Increased Power
