Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/50-15 | 185/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.89 (556) | 22.28 (566) | 0.39 (10) 1.8% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 68.77 (1746.73) | 70.01 (1778.14) | 1.24 (31.42) 1.8% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 3.64 (92.5) | 0.2 (5) 5.7% |
| Revolutions per mile (km) | 921.35 (572.5) | 905.07 (562.38) | -16.28 (-10.11) -1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.36 mph (32.77 km/h) |
| 25 mph (40.23 km/h) | 25.45 mph (40.96 km/h) |
| 30 mph (48.28 km/h) | 30.54 mph (49.15 km/h) |
| 35 mph (56.33 km/h) | 35.63 mph (57.34 km/h) |
| 40 mph (64.37 km/h) | 40.72 mph (65.53 km/h) |
| 45 mph (72.42 km/h) | 45.81 mph (73.72 km/h) |
| 50 mph (80.47 km/h) | 50.9 mph (81.91 km/h) |
| 55 mph (88.51 km/h) | 55.99 mph (90.11 km/h) |
| 60 mph (96.56 km/h) | 61.08 mph (98.3 km/h) |
| 65 mph (104.61 km/h) | 66.17 mph (106.49 km/h) |
| 70 mph (112.65 km/h) | 71.26 mph (114.68 km/h) |
| 75 mph (120.7 km/h) | 76.35 mph (122.87 km/h) |
| 80 mph (128.75 km/h) | 81.44 mph (131.06 km/h) |
| 85 mph (136.79 km/h) | 86.53 mph (139.25 km/h) |
| 90 mph (144.84 km/h) | 91.62 mph (147.45 km/h) |
| 95 mph (152.89 km/h) | 96.71 mph (155.64 km/h) |
| 100 mph (160.93 km/h) | 101.8 mph (163.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2303 | 2676 | 2881 | 3009 | 3146 | 3244 | 3352 | 3479 | 3656 | 3832 | 4028 | 4185 | 4469 | 4783 | 5028 | 5185 | 5273 | 5596 | 6047 | 7027 |
Better Fuel Economy Factory Ratios Increased Power
