Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-18 | 275/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.74 (704.7) | 28.83 (732.2) | 1.08 (27.5) 3.9% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 87.16 (2213.88) | 90.56 (2300.27) | 3.4 (86.39) 3.9% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.41 (137.5) | 0.54 (13.75) 11.1% |
| Revolutions per mile (km) | 726.93 (451.69) | 699.63 (434.73) | -27.3 (-16.96) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.78 mph (33.44 km/h) |
| 25 mph (40.23 km/h) | 25.98 mph (41.8 km/h) |
| 30 mph (48.28 km/h) | 31.17 mph (50.16 km/h) |
| 35 mph (56.33 km/h) | 36.37 mph (58.53 km/h) |
| 40 mph (64.37 km/h) | 41.56 mph (66.89 km/h) |
| 45 mph (72.42 km/h) | 46.76 mph (75.25 km/h) |
| 50 mph (80.47 km/h) | 51.95 mph (83.61 km/h) |
| 55 mph (88.51 km/h) | 57.15 mph (91.97 km/h) |
| 60 mph (96.56 km/h) | 62.34 mph (100.33 km/h) |
| 65 mph (104.61 km/h) | 67.54 mph (108.69 km/h) |
| 70 mph (112.65 km/h) | 72.73 mph (117.05 km/h) |
| 75 mph (120.7 km/h) | 77.93 mph (125.41 km/h) |
| 80 mph (128.75 km/h) | 83.12 mph (133.77 km/h) |
| 85 mph (136.79 km/h) | 88.32 mph (142.13 km/h) |
| 90 mph (144.84 km/h) | 93.51 mph (150.49 km/h) |
| 95 mph (152.89 km/h) | 98.71 mph (158.85 km/h) |
| 100 mph (160.93 km/h) | 103.9 mph (167.21 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
