Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/80-18 | 275/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.06 (865.2) | 35.32 (897.2) | 1.26 (32) 3.7% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 107.01 (2718.11) | 110.97 (2818.64) | 3.96 (100.53) 3.7% |
| Sidewall Height inches (mm) | 8.03 (204) | 8.66 (220) | 0.63 (16) 7.8% |
| Revolutions per mile (km) | 592.08 (367.9) | 570.97 (354.78) | -21.12 (-13.12) -3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.74 mph (33.38 km/h) |
| 25 mph (40.23 km/h) | 25.92 mph (41.72 km/h) |
| 30 mph (48.28 km/h) | 31.11 mph (50.07 km/h) |
| 35 mph (56.33 km/h) | 36.29 mph (58.41 km/h) |
| 40 mph (64.37 km/h) | 41.48 mph (66.75 km/h) |
| 45 mph (72.42 km/h) | 46.66 mph (75.1 km/h) |
| 50 mph (80.47 km/h) | 51.85 mph (83.44 km/h) |
| 55 mph (88.51 km/h) | 57.03 mph (91.79 km/h) |
| 60 mph (96.56 km/h) | 62.22 mph (100.13 km/h) |
| 65 mph (104.61 km/h) | 67.4 mph (108.48 km/h) |
| 70 mph (112.65 km/h) | 72.59 mph (116.82 km/h) |
| 75 mph (120.7 km/h) | 77.77 mph (125.17 km/h) |
| 80 mph (128.75 km/h) | 82.96 mph (133.51 km/h) |
| 85 mph (136.79 km/h) | 88.14 mph (141.85 km/h) |
| 90 mph (144.84 km/h) | 93.33 mph (150.2 km/h) |
| 95 mph (152.89 km/h) | 98.51 mph (158.54 km/h) |
| 100 mph (160.93 km/h) | 103.7 mph (166.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1453 | 1688 | 1818 | 1898 | 1985 | 2047 | 2115 | 2195 | 2306 | 2418 | 2541 | 2640 | 2819 | 3017 | 3172 | 3271 | 3326 | 3530 | 3815 | 4433 |
Better Fuel Economy Factory Ratios Increased Power
