Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 150/90-15 | 180/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.63 (651) | 27.76 (705) | 2.13 (54) 8.3% |
| Width inches (mm) | 5.91 (150) | 7.09 (180) | 1.18 (30) 20% |
| Circum. inches (mm) | 80.52 (2045.18) | 87.2 (2214.82) | 6.68 (169.65) 8.3% |
| Sidewall Height inches (mm) | 5.31 (135) | 6.38 (162) | 1.06 (27) 20% |
| Revolutions per mile (km) | 786.9 (488.95) | 726.62 (451.5) | -60.27 (-37.45) -7.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.66 mph (34.86 km/h) |
| 25 mph (40.23 km/h) | 27.07 mph (43.57 km/h) |
| 30 mph (48.28 km/h) | 32.49 mph (52.29 km/h) |
| 35 mph (56.33 km/h) | 37.9 mph (61 km/h) |
| 40 mph (64.37 km/h) | 43.32 mph (69.71 km/h) |
| 45 mph (72.42 km/h) | 48.73 mph (78.43 km/h) |
| 50 mph (80.47 km/h) | 54.15 mph (87.14 km/h) |
| 55 mph (88.51 km/h) | 59.56 mph (95.86 km/h) |
| 60 mph (96.56 km/h) | 64.98 mph (104.57 km/h) |
| 65 mph (104.61 km/h) | 70.39 mph (113.28 km/h) |
| 70 mph (112.65 km/h) | 75.81 mph (122 km/h) |
| 75 mph (120.7 km/h) | 81.22 mph (130.71 km/h) |
| 80 mph (128.75 km/h) | 86.64 mph (139.43 km/h) |
| 85 mph (136.79 km/h) | 92.05 mph (148.14 km/h) |
| 90 mph (144.84 km/h) | 97.47 mph (156.86 km/h) |
| 95 mph (152.89 km/h) | 102.88 mph (165.57 km/h) |
| 100 mph (160.93 km/h) | 108.29 mph (174.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1849 | 2148 | 2313 | 2416 | 2526 | 2605 | 2691 | 2793 | 2935 | 3077 | 3234 | 3360 | 3588 | 3840 | 4037 | 4162 | 4233 | 4493 | 4855 | 5642 |
Better Fuel Economy Factory Ratios Increased Power
