Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/65-17 | 310/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.56 (776.3) | 33.43 (849) | 2.86 (72.7) 9.4% |
| Width inches (mm) | 10.43 (265) | 12.2 (310) | 1.77 (45) 17% |
| Circum. inches (mm) | 96.02 (2438.82) | 105.01 (2667.21) | 8.99 (228.39) 9.4% |
| Sidewall Height inches (mm) | 6.78 (172.25) | 6.71 (170.5) | -0.07 (-1.75) -1% |
| Revolutions per mile (km) | 659.89 (410.03) | 603.38 (374.92) | -56.51 (-35.11) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.87 mph (35.2 km/h) |
| 25 mph (40.23 km/h) | 27.34 mph (44 km/h) |
| 30 mph (48.28 km/h) | 32.81 mph (52.8 km/h) |
| 35 mph (56.33 km/h) | 38.28 mph (61.6 km/h) |
| 40 mph (64.37 km/h) | 43.75 mph (70.4 km/h) |
| 45 mph (72.42 km/h) | 49.21 mph (79.2 km/h) |
| 50 mph (80.47 km/h) | 54.68 mph (88 km/h) |
| 55 mph (88.51 km/h) | 60.15 mph (96.8 km/h) |
| 60 mph (96.56 km/h) | 65.62 mph (105.6 km/h) |
| 65 mph (104.61 km/h) | 71.09 mph (114.4 km/h) |
| 70 mph (112.65 km/h) | 76.56 mph (123.2 km/h) |
| 75 mph (120.7 km/h) | 82.02 mph (132 km/h) |
| 80 mph (128.75 km/h) | 87.49 mph (140.8 km/h) |
| 85 mph (136.79 km/h) | 92.96 mph (149.61 km/h) |
| 90 mph (144.84 km/h) | 98.43 mph (158.41 km/h) |
| 95 mph (152.89 km/h) | 103.9 mph (167.21 km/h) |
| 100 mph (160.93 km/h) | 109.36 mph (176.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1535 | 1784 | 1921 | 2006 | 2097 | 2163 | 2235 | 2320 | 2437 | 2555 | 2685 | 2790 | 2980 | 3189 | 3352 | 3456 | 3515 | 3731 | 4031 | 4685 |
Better Fuel Economy Factory Ratios Increased Power
