Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/66-17 | 31/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.77 (781.6) | 31.02 (787.96) | 0.25 (6.36) 0.8% |
| Width inches (mm) | 10.43 (265) | 12.52 (318) | 2.09 (53) 20% |
| Circum. inches (mm) | 96.67 (2455.47) | 97.46 (2475.45) | 0.79 (19.98) 0.8% |
| Sidewall Height inches (mm) | 6.89 (174.9) | 7.01 (178.08) | 0.13 (3.18) 1.8% |
| Revolutions per mile (km) | 655.41 (407.25) | 650.12 (403.97) | -5.29 (-3.29) -0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.16 mph (32.45 km/h) |
| 25 mph (40.23 km/h) | 25.2 mph (40.56 km/h) |
| 30 mph (48.28 km/h) | 30.24 mph (48.67 km/h) |
| 35 mph (56.33 km/h) | 35.28 mph (56.79 km/h) |
| 40 mph (64.37 km/h) | 40.33 mph (64.9 km/h) |
| 45 mph (72.42 km/h) | 45.37 mph (73.01 km/h) |
| 50 mph (80.47 km/h) | 50.41 mph (81.12 km/h) |
| 55 mph (88.51 km/h) | 55.45 mph (89.23 km/h) |
| 60 mph (96.56 km/h) | 60.49 mph (97.35 km/h) |
| 65 mph (104.61 km/h) | 65.53 mph (105.46 km/h) |
| 70 mph (112.65 km/h) | 70.57 mph (113.57 km/h) |
| 75 mph (120.7 km/h) | 75.61 mph (121.68 km/h) |
| 80 mph (128.75 km/h) | 80.65 mph (129.8 km/h) |
| 85 mph (136.79 km/h) | 85.69 mph (137.91 km/h) |
| 90 mph (144.84 km/h) | 90.73 mph (146.02 km/h) |
| 95 mph (152.89 km/h) | 95.77 mph (154.13 km/h) |
| 100 mph (160.93 km/h) | 100.81 mph (162.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1654 | 1922 | 2070 | 2161 | 2260 | 2330 | 2408 | 2499 | 2626 | 2753 | 2894 | 3006 | 3210 | 3436 | 3612 | 3724 | 3788 | 4020 | 4344 | 5048 |
Better Fuel Economy Factory Ratios Increased Power
