Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-17 | 275/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.28 (616.8) | 26.74 (679.3) | 2.46 (62.5) 10.1% |
| Width inches (mm) | 7.28 (185) | 10.83 (275) | 3.54 (90) 48.6% |
| Circum. inches (mm) | 76.29 (1937.73) | 84.02 (2134.08) | 7.73 (196.35) 10.1% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 4.87 (123.75) | 1.23 (31.25) 33.8% |
| Revolutions per mile (km) | 830.53 (516.07) | 754.11 (468.58) | -76.41 (-47.48) -9.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.03 mph (35.45 km/h) |
| 25 mph (40.23 km/h) | 27.53 mph (44.31 km/h) |
| 30 mph (48.28 km/h) | 33.04 mph (53.17 km/h) |
| 35 mph (56.33 km/h) | 38.55 mph (62.03 km/h) |
| 40 mph (64.37 km/h) | 44.05 mph (70.9 km/h) |
| 45 mph (72.42 km/h) | 49.56 mph (79.76 km/h) |
| 50 mph (80.47 km/h) | 55.07 mph (88.62 km/h) |
| 55 mph (88.51 km/h) | 60.57 mph (97.48 km/h) |
| 60 mph (96.56 km/h) | 66.08 mph (106.35 km/h) |
| 65 mph (104.61 km/h) | 71.59 mph (115.21 km/h) |
| 70 mph (112.65 km/h) | 77.09 mph (124.07 km/h) |
| 75 mph (120.7 km/h) | 82.6 mph (132.93 km/h) |
| 80 mph (128.75 km/h) | 88.11 mph (141.79 km/h) |
| 85 mph (136.79 km/h) | 93.61 mph (150.66 km/h) |
| 90 mph (144.84 km/h) | 99.12 mph (159.52 km/h) |
| 95 mph (152.89 km/h) | 104.63 mph (168.38 km/h) |
| 100 mph (160.93 km/h) | 110.13 mph (177.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1919 | 2229 | 2401 | 2507 | 2621 | 2703 | 2793 | 2899 | 3046 | 3193 | 3356 | 3487 | 3724 | 3985 | 4189 | 4320 | 4393 | 4663 | 5039 | 5855 |
Better Fuel Economy Factory Ratios Increased Power
