Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 31/15.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 31.13 (790.76) | 3.15 (80) 11.3% |
| Width inches (mm) | 9.02 (229) | 15.51 (394) | 6.5 (165) 72.1% |
| Circum. inches (mm) | 87.91 (2232.92) | 97.8 (2484.25) | 9.89 (251.33) 11.3% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 8.07 (204.88) | 1.57 (40) 24.3% |
| Revolutions per mile (km) | 720.74 (447.84) | 647.82 (402.54) | -72.92 (-45.31) -10.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.25 mph (35.81 km/h) |
| 25 mph (40.23 km/h) | 27.81 mph (44.76 km/h) |
| 30 mph (48.28 km/h) | 33.38 mph (53.71 km/h) |
| 35 mph (56.33 km/h) | 38.94 mph (62.67 km/h) |
| 40 mph (64.37 km/h) | 44.5 mph (71.62 km/h) |
| 45 mph (72.42 km/h) | 50.07 mph (80.57 km/h) |
| 50 mph (80.47 km/h) | 55.63 mph (89.52 km/h) |
| 55 mph (88.51 km/h) | 61.19 mph (98.48 km/h) |
| 60 mph (96.56 km/h) | 66.75 mph (107.43 km/h) |
| 65 mph (104.61 km/h) | 72.32 mph (116.38 km/h) |
| 70 mph (112.65 km/h) | 77.88 mph (125.33 km/h) |
| 75 mph (120.7 km/h) | 83.44 mph (134.29 km/h) |
| 80 mph (128.75 km/h) | 89 mph (143.24 km/h) |
| 85 mph (136.79 km/h) | 94.57 mph (152.19 km/h) |
| 90 mph (144.84 km/h) | 100.13 mph (161.14 km/h) |
| 95 mph (152.89 km/h) | 105.69 mph (170.1 km/h) |
| 100 mph (160.93 km/h) | 111.26 mph (179.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1649 | 1915 | 2062 | 2154 | 2252 | 2322 | 2399 | 2490 | 2617 | 2743 | 2883 | 2996 | 3199 | 3423 | 3599 | 3711 | 3774 | 4006 | 4328 | 5030 |
Better Fuel Economy Factory Ratios Increased Power
