Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 260/55-18 | 275/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.26 (743.2) | 28.83 (732.2) | -0.43 (-11) -1.5% |
| Width inches (mm) | 10.24 (260) | 10.83 (275) | 0.59 (15) 5.8% |
| Circum. inches (mm) | 91.92 (2334.83) | 90.56 (2300.27) | -1.36 (-34.56) -1.5% |
| Sidewall Height inches (mm) | 5.63 (143) | 5.41 (137.5) | -0.22 (-5.5) -3.8% |
| Revolutions per mile (km) | 689.28 (428.3) | 699.63 (434.73) | 10.36 (6.43) 1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.7 mph (31.71 km/h) |
| 25 mph (40.23 km/h) | 24.63 mph (39.64 km/h) |
| 30 mph (48.28 km/h) | 29.56 mph (47.57 km/h) |
| 35 mph (56.33 km/h) | 34.48 mph (55.49 km/h) |
| 40 mph (64.37 km/h) | 39.41 mph (63.42 km/h) |
| 45 mph (72.42 km/h) | 44.33 mph (71.35 km/h) |
| 50 mph (80.47 km/h) | 49.26 mph (79.28 km/h) |
| 55 mph (88.51 km/h) | 54.19 mph (87.2 km/h) |
| 60 mph (96.56 km/h) | 59.11 mph (95.13 km/h) |
| 65 mph (104.61 km/h) | 64.04 mph (103.06 km/h) |
| 70 mph (112.65 km/h) | 68.96 mph (110.99 km/h) |
| 75 mph (120.7 km/h) | 73.89 mph (118.91 km/h) |
| 80 mph (128.75 km/h) | 78.82 mph (126.84 km/h) |
| 85 mph (136.79 km/h) | 83.74 mph (134.77 km/h) |
| 90 mph (144.84 km/h) | 88.67 mph (142.7 km/h) |
| 95 mph (152.89 km/h) | 93.59 mph (150.63 km/h) |
| 100 mph (160.93 km/h) | 98.52 mph (158.55 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
