Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/70-15 | 150/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.92 (633) | 25.63 (651) | 0.71 (18) 2.8% |
| Width inches (mm) | 7.09 (180) | 5.91 (150) | -1.18 (-30) -16.7% |
| Circum. inches (mm) | 78.29 (1988.63) | 80.52 (2045.18) | 2.23 (56.55) 2.8% |
| Sidewall Height inches (mm) | 4.96 (126) | 5.31 (135) | 0.35 (9) 7.1% |
| Revolutions per mile (km) | 809.27 (502.86) | 786.9 (488.95) | -22.38 (-13.9) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.38 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.65 km/h) |
| 35 mph (56.33 km/h) | 36 mph (57.93 km/h) |
| 40 mph (64.37 km/h) | 41.14 mph (66.2 km/h) |
| 45 mph (72.42 km/h) | 46.28 mph (74.48 km/h) |
| 50 mph (80.47 km/h) | 51.42 mph (82.76 km/h) |
| 55 mph (88.51 km/h) | 56.56 mph (91.03 km/h) |
| 60 mph (96.56 km/h) | 61.71 mph (99.31 km/h) |
| 65 mph (104.61 km/h) | 66.85 mph (107.58 km/h) |
| 70 mph (112.65 km/h) | 71.99 mph (115.86 km/h) |
| 75 mph (120.7 km/h) | 77.13 mph (124.13 km/h) |
| 80 mph (128.75 km/h) | 82.27 mph (132.41 km/h) |
| 85 mph (136.79 km/h) | 87.42 mph (140.68 km/h) |
| 90 mph (144.84 km/h) | 92.56 mph (148.96 km/h) |
| 95 mph (152.89 km/h) | 97.7 mph (157.24 km/h) |
| 100 mph (160.93 km/h) | 102.84 mph (165.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 2326 | 2505 | 2616 | 2735 | 2821 | 2914 | 3025 | 3178 | 3332 | 3502 | 3639 | 3886 | 4158 | 4371 | 4508 | 4584 | 4866 | 5258 | 6110 |
Better Fuel Economy Factory Ratios Increased Power
