Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 185/50-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 23.28 (591.4) | 2.09 (53) 9.8% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 66.59 (1691.43) | 73.15 (1857.94) | 6.56 (166.5) 9.8% |
| Sidewall Height inches (mm) | 2.6 (66) | 3.64 (92.5) | 1.04 (26.5) 40.2% |
| Revolutions per mile (km) | 951.47 (591.21) | 866.2 (538.23) | -85.27 (-52.98) -9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.97 mph (35.36 km/h) |
| 25 mph (40.23 km/h) | 27.46 mph (44.19 km/h) |
| 30 mph (48.28 km/h) | 32.95 mph (53.03 km/h) |
| 35 mph (56.33 km/h) | 38.45 mph (61.87 km/h) |
| 40 mph (64.37 km/h) | 43.94 mph (70.71 km/h) |
| 45 mph (72.42 km/h) | 49.43 mph (79.55 km/h) |
| 50 mph (80.47 km/h) | 54.92 mph (88.39 km/h) |
| 55 mph (88.51 km/h) | 60.41 mph (97.23 km/h) |
| 60 mph (96.56 km/h) | 65.91 mph (106.07 km/h) |
| 65 mph (104.61 km/h) | 71.4 mph (114.91 km/h) |
| 70 mph (112.65 km/h) | 76.89 mph (123.74 km/h) |
| 75 mph (120.7 km/h) | 82.38 mph (132.58 km/h) |
| 80 mph (128.75 km/h) | 87.88 mph (141.42 km/h) |
| 85 mph (136.79 km/h) | 93.37 mph (150.26 km/h) |
| 90 mph (144.84 km/h) | 98.86 mph (159.1 km/h) |
| 95 mph (152.89 km/h) | 104.35 mph (167.94 km/h) |
| 100 mph (160.93 km/h) | 109.84 mph (176.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2204 | 2561 | 2758 | 2880 | 3011 | 3105 | 3208 | 3330 | 3499 | 3668 | 3855 | 4005 | 4277 | 4577 | 4812 | 4962 | 5046 | 5356 | 5787 | 6725 |
Better Fuel Economy Factory Ratios Increased Power
