Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-20 | 275/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.29 (744) | 28.83 (732.2) | -0.46 (-11.8) -1.6% |
| Width inches (mm) | 11.61 (295) | 10.83 (275) | -0.79 (-20) -6.8% |
| Circum. inches (mm) | 92.02 (2337.34) | 90.56 (2300.27) | -1.46 (-37.07) -1.6% |
| Sidewall Height inches (mm) | 4.65 (118) | 5.41 (137.5) | 0.77 (19.5) 16.5% |
| Revolutions per mile (km) | 688.54 (427.84) | 699.63 (434.73) | 11.1 (6.89) 1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.68 mph (31.68 km/h) |
| 25 mph (40.23 km/h) | 24.6 mph (39.6 km/h) |
| 30 mph (48.28 km/h) | 29.52 mph (47.51 km/h) |
| 35 mph (56.33 km/h) | 34.44 mph (55.43 km/h) |
| 40 mph (64.37 km/h) | 39.37 mph (63.35 km/h) |
| 45 mph (72.42 km/h) | 44.29 mph (71.27 km/h) |
| 50 mph (80.47 km/h) | 49.21 mph (79.19 km/h) |
| 55 mph (88.51 km/h) | 54.13 mph (87.11 km/h) |
| 60 mph (96.56 km/h) | 59.05 mph (95.03 km/h) |
| 65 mph (104.61 km/h) | 63.97 mph (102.95 km/h) |
| 70 mph (112.65 km/h) | 68.89 mph (110.87 km/h) |
| 75 mph (120.7 km/h) | 73.81 mph (118.79 km/h) |
| 80 mph (128.75 km/h) | 78.73 mph (126.71 km/h) |
| 85 mph (136.79 km/h) | 83.65 mph (134.62 km/h) |
| 90 mph (144.84 km/h) | 88.57 mph (142.54 km/h) |
| 95 mph (152.89 km/h) | 93.49 mph (150.46 km/h) |
| 100 mph (160.93 km/h) | 98.41 mph (158.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1780 | 2068 | 2227 | 2326 | 2432 | 2508 | 2591 | 2690 | 2826 | 2962 | 3114 | 3235 | 3455 | 3697 | 3887 | 4008 | 4076 | 4326 | 4675 | 5432 |
Better Fuel Economy Factory Ratios Increased Power
