Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 31.5/10.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 31.56 (801.56) | 5.16 (131.16) 19.6% |
| Width inches (mm) | 9.45 (240) | 10.51 (267) | 1.06 (27) 11.3% |
| Circum. inches (mm) | 82.92 (2106.12) | 99.14 (2518.18) | 16.22 (412.05) 19.6% |
| Sidewall Height inches (mm) | 5.2 (132) | 7.78 (197.58) | 2.58 (65.58) 49.7% |
| Revolutions per mile (km) | 764.13 (474.81) | 639.09 (397.11) | -125.03 (-77.69) -16.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.91 mph (38.48 km/h) |
| 25 mph (40.23 km/h) | 29.89 mph (48.11 km/h) |
| 30 mph (48.28 km/h) | 35.87 mph (57.73 km/h) |
| 35 mph (56.33 km/h) | 41.85 mph (67.35 km/h) |
| 40 mph (64.37 km/h) | 47.83 mph (76.97 km/h) |
| 45 mph (72.42 km/h) | 53.8 mph (86.59 km/h) |
| 50 mph (80.47 km/h) | 59.78 mph (96.21 km/h) |
| 55 mph (88.51 km/h) | 65.76 mph (105.83 km/h) |
| 60 mph (96.56 km/h) | 71.74 mph (115.45 km/h) |
| 65 mph (104.61 km/h) | 77.72 mph (125.07 km/h) |
| 70 mph (112.65 km/h) | 83.7 mph (134.69 km/h) |
| 75 mph (120.7 km/h) | 89.67 mph (144.32 km/h) |
| 80 mph (128.75 km/h) | 95.65 mph (153.94 km/h) |
| 85 mph (136.79 km/h) | 101.63 mph (163.56 km/h) |
| 90 mph (144.84 km/h) | 107.61 mph (173.18 km/h) |
| 95 mph (152.89 km/h) | 113.59 mph (182.8 km/h) |
| 100 mph (160.93 km/h) | 119.56 mph (192.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1626 | 1889 | 2035 | 2125 | 2222 | 2291 | 2367 | 2457 | 2581 | 2706 | 2844 | 2955 | 3156 | 3377 | 3550 | 3661 | 3723 | 3952 | 4270 | 4962 |
Better Fuel Economy Factory Ratios Increased Power
