Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 165/30-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 20.9 (530.8) | -0.3 (-7.6) -1.4% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 66.59 (1691.43) | 65.65 (1667.56) | -0.94 (-23.88) -1.4% |
| Sidewall Height inches (mm) | 2.6 (66) | 1.95 (49.5) | -0.65 (-16.5) -25% |
| Revolutions per mile (km) | 951.47 (591.21) | 965.09 (599.68) | 13.62 (8.46) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.73 km/h) |
| 25 mph (40.23 km/h) | 24.65 mph (39.67 km/h) |
| 30 mph (48.28 km/h) | 29.58 mph (47.6 km/h) |
| 35 mph (56.33 km/h) | 34.51 mph (55.53 km/h) |
| 40 mph (64.37 km/h) | 39.44 mph (63.47 km/h) |
| 45 mph (72.42 km/h) | 44.36 mph (71.4 km/h) |
| 50 mph (80.47 km/h) | 49.29 mph (79.33 km/h) |
| 55 mph (88.51 km/h) | 54.22 mph (87.26 km/h) |
| 60 mph (96.56 km/h) | 59.15 mph (95.2 km/h) |
| 65 mph (104.61 km/h) | 64.08 mph (103.13 km/h) |
| 70 mph (112.65 km/h) | 69.01 mph (111.06 km/h) |
| 75 mph (120.7 km/h) | 73.94 mph (119 km/h) |
| 80 mph (128.75 km/h) | 78.87 mph (126.93 km/h) |
| 85 mph (136.79 km/h) | 83.8 mph (134.86 km/h) |
| 90 mph (144.84 km/h) | 88.73 mph (142.8 km/h) |
| 95 mph (152.89 km/h) | 93.66 mph (150.73 km/h) |
| 100 mph (160.93 km/h) | 98.59 mph (158.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
