Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/45-17 | 275/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.52 (724.3) | 27.83 (706.8) | -0.69 (-17.5) -2.4% |
| Width inches (mm) | 12.8 (325) | 10.83 (275) | -1.97 (-50) -15.4% |
| Circum. inches (mm) | 89.58 (2275.46) | 87.42 (2220.48) | -2.16 (-54.98) -2.4% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 5.41 (137.5) | -0.34 (-8.75) -6% |
| Revolutions per mile (km) | 707.26 (439.47) | 724.77 (450.35) | 17.51 (10.88) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.52 mph (31.41 km/h) |
| 25 mph (40.23 km/h) | 24.4 mph (39.26 km/h) |
| 30 mph (48.28 km/h) | 29.28 mph (47.11 km/h) |
| 35 mph (56.33 km/h) | 34.15 mph (54.97 km/h) |
| 40 mph (64.37 km/h) | 39.03 mph (62.82 km/h) |
| 45 mph (72.42 km/h) | 43.91 mph (70.67 km/h) |
| 50 mph (80.47 km/h) | 48.79 mph (78.52 km/h) |
| 55 mph (88.51 km/h) | 53.67 mph (86.38 km/h) |
| 60 mph (96.56 km/h) | 58.55 mph (94.23 km/h) |
| 65 mph (104.61 km/h) | 63.43 mph (102.08 km/h) |
| 70 mph (112.65 km/h) | 68.31 mph (109.93 km/h) |
| 75 mph (120.7 km/h) | 73.19 mph (117.78 km/h) |
| 80 mph (128.75 km/h) | 78.07 mph (125.64 km/h) |
| 85 mph (136.79 km/h) | 82.95 mph (133.49 km/h) |
| 90 mph (144.84 km/h) | 87.83 mph (141.34 km/h) |
| 95 mph (152.89 km/h) | 92.7 mph (149.19 km/h) |
| 100 mph (160.93 km/h) | 97.58 mph (157.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1844 | 2143 | 2307 | 2410 | 2519 | 2598 | 2684 | 2786 | 2928 | 3069 | 3226 | 3351 | 3579 | 3830 | 4026 | 4152 | 4223 | 4482 | 4843 | 5627 |
Better Fuel Economy Factory Ratios Increased Power
