Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 31/12.5-17 | 265/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.02 (787.96) | 32.65 (829.3) | 1.63 (41.34) 5.2% |
| Width inches (mm) | 12.52 (318) | 10.43 (265) | -2.09 (-53) -16.7% |
| Circum. inches (mm) | 97.46 (2475.45) | 102.57 (2605.32) | 5.11 (129.87) 5.2% |
| Sidewall Height inches (mm) | 7.01 (178.08) | 7.82 (198.75) | 0.81 (20.67) 11.6% |
| Revolutions per mile (km) | 650.12 (403.97) | 617.71 (383.83) | -32.41 (-20.14) -5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.88 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.34 km/h) |
| 30 mph (48.28 km/h) | 31.57 mph (50.81 km/h) |
| 35 mph (56.33 km/h) | 36.84 mph (59.28 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.75 km/h) |
| 45 mph (72.42 km/h) | 47.36 mph (76.22 km/h) |
| 50 mph (80.47 km/h) | 52.62 mph (84.69 km/h) |
| 55 mph (88.51 km/h) | 57.89 mph (93.16 km/h) |
| 60 mph (96.56 km/h) | 63.15 mph (101.63 km/h) |
| 65 mph (104.61 km/h) | 68.41 mph (110.1 km/h) |
| 70 mph (112.65 km/h) | 73.67 mph (118.56 km/h) |
| 75 mph (120.7 km/h) | 78.93 mph (127.03 km/h) |
| 80 mph (128.75 km/h) | 84.2 mph (135.5 km/h) |
| 85 mph (136.79 km/h) | 89.46 mph (143.97 km/h) |
| 90 mph (144.84 km/h) | 94.72 mph (152.44 km/h) |
| 95 mph (152.89 km/h) | 99.98 mph (160.91 km/h) |
| 100 mph (160.93 km/h) | 105.25 mph (169.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1572 | 1826 | 1967 | 2054 | 2147 | 2214 | 2288 | 2375 | 2495 | 2615 | 2749 | 2856 | 3050 | 3264 | 3432 | 3539 | 3599 | 3820 | 4127 | 4796 |
Better Fuel Economy Factory Ratios Increased Power
