Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 275/65-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 26.07 (662.3) | 6.93 (176) 36.2% |
| Width inches (mm) | 6.5 (165) | 10.83 (275) | 4.33 (110) 66.7% |
| Circum. inches (mm) | 60.15 (1527.76) | 81.92 (2080.68) | 21.77 (552.92) 36.2% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 7.04 (178.75) | 3.46 (88) 97% |
| Revolutions per mile (km) | 1053.4 (654.55) | 773.47 (480.61) | -279.93 (-173.94) -26.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.24 mph (43.84 km/h) |
| 25 mph (40.23 km/h) | 34.05 mph (54.79 km/h) |
| 30 mph (48.28 km/h) | 40.86 mph (65.75 km/h) |
| 35 mph (56.33 km/h) | 47.67 mph (76.71 km/h) |
| 40 mph (64.37 km/h) | 54.48 mph (87.67 km/h) |
| 45 mph (72.42 km/h) | 61.29 mph (98.63 km/h) |
| 50 mph (80.47 km/h) | 68.1 mph (109.59 km/h) |
| 55 mph (88.51 km/h) | 74.91 mph (120.55 km/h) |
| 60 mph (96.56 km/h) | 81.71 mph (131.51 km/h) |
| 65 mph (104.61 km/h) | 88.52 mph (142.47 km/h) |
| 70 mph (112.65 km/h) | 95.33 mph (153.43 km/h) |
| 75 mph (120.7 km/h) | 102.14 mph (164.38 km/h) |
| 80 mph (128.75 km/h) | 108.95 mph (175.34 km/h) |
| 85 mph (136.79 km/h) | 115.76 mph (186.3 km/h) |
| 90 mph (144.84 km/h) | 122.57 mph (197.26 km/h) |
| 95 mph (152.89 km/h) | 129.38 mph (208.22 km/h) |
| 100 mph (160.93 km/h) | 136.19 mph (219.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1968 | 2287 | 2463 | 2571 | 2689 | 2772 | 2865 | 2973 | 3124 | 3275 | 3442 | 3577 | 3819 | 4087 | 4297 | 4431 | 4506 | 4783 | 5168 | 6006 |
Better Fuel Economy Factory Ratios Increased Power
