Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 310/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 32.2 (818) | 6.79 (172.5) 26.7% |
| Width inches (mm) | 10.83 (275) | 12.2 (310) | 1.38 (35) 12.7% |
| Circum. inches (mm) | 79.84 (2027.9) | 101.17 (2569.82) | 21.34 (541.92) 26.7% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 6.1 (155) | 3.4 (86.25) 125.5% |
| Revolutions per mile (km) | 793.6 (493.12) | 626.25 (389.13) | -167.35 (-103.99) -21.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.34 mph (40.79 km/h) |
| 25 mph (40.23 km/h) | 31.68 mph (50.99 km/h) |
| 30 mph (48.28 km/h) | 38.02 mph (61.18 km/h) |
| 35 mph (56.33 km/h) | 44.35 mph (71.38 km/h) |
| 40 mph (64.37 km/h) | 50.69 mph (81.58 km/h) |
| 45 mph (72.42 km/h) | 57.03 mph (91.77 km/h) |
| 50 mph (80.47 km/h) | 63.36 mph (101.97 km/h) |
| 55 mph (88.51 km/h) | 69.7 mph (112.17 km/h) |
| 60 mph (96.56 km/h) | 76.03 mph (122.37 km/h) |
| 65 mph (104.61 km/h) | 82.37 mph (132.56 km/h) |
| 70 mph (112.65 km/h) | 88.71 mph (142.76 km/h) |
| 75 mph (120.7 km/h) | 95.04 mph (152.96 km/h) |
| 80 mph (128.75 km/h) | 101.38 mph (163.15 km/h) |
| 85 mph (136.79 km/h) | 107.71 mph (173.35 km/h) |
| 90 mph (144.84 km/h) | 114.05 mph (183.55 km/h) |
| 95 mph (152.89 km/h) | 120.39 mph (193.74 km/h) |
| 100 mph (160.93 km/h) | 126.72 mph (203.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1594 | 1851 | 1994 | 2082 | 2177 | 2245 | 2319 | 2407 | 2530 | 2652 | 2787 | 2896 | 3092 | 3309 | 3479 | 3587 | 3649 | 3872 | 4184 | 4862 |
Better Fuel Economy Factory Ratios Increased Power
