Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 165/30-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 18.9 (480) | -2.3 (-58.5) -10.9% |
| Width inches (mm) | 6.89 (175) | 6.5 (165) | -0.39 (-10) -5.7% |
| Circum. inches (mm) | 66.6 (1691.75) | 59.37 (1507.96) | -7.24 (-183.78) -10.9% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 1.95 (49.5) | -1.15 (-29.25) -37.1% |
| Revolutions per mile (km) | 951.29 (591.1) | 1067.23 (663.14) | 115.94 (72.04) 12.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.83 mph (28.69 km/h) |
| 25 mph (40.23 km/h) | 22.28 mph (35.86 km/h) |
| 30 mph (48.28 km/h) | 26.74 mph (43.04 km/h) |
| 35 mph (56.33 km/h) | 31.2 mph (50.21 km/h) |
| 40 mph (64.37 km/h) | 35.65 mph (57.38 km/h) |
| 45 mph (72.42 km/h) | 40.11 mph (64.55 km/h) |
| 50 mph (80.47 km/h) | 44.57 mph (71.73 km/h) |
| 55 mph (88.51 km/h) | 49.03 mph (78.9 km/h) |
| 60 mph (96.56 km/h) | 53.48 mph (86.07 km/h) |
| 65 mph (104.61 km/h) | 57.94 mph (93.24 km/h) |
| 70 mph (112.65 km/h) | 62.4 mph (100.42 km/h) |
| 75 mph (120.7 km/h) | 66.85 mph (107.59 km/h) |
| 80 mph (128.75 km/h) | 71.31 mph (114.76 km/h) |
| 85 mph (136.79 km/h) | 75.77 mph (121.93 km/h) |
| 90 mph (144.84 km/h) | 80.22 mph (129.11 km/h) |
| 95 mph (152.89 km/h) | 84.68 mph (136.28 km/h) |
| 100 mph (160.93 km/h) | 89.14 mph (143.45 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
