Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 145/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 24.13 (613) | -0.43 (-11) -1.8% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 77.18 (1960.35) | 75.82 (1925.8) | -1.36 (-34.56) -1.8% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 4.57 (116) | -0.22 (-5.5) -4.5% |
| Revolutions per mile (km) | 820.95 (510.11) | 835.68 (519.26) | 14.73 (9.15) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.65 mph (31.62 km/h) |
| 25 mph (40.23 km/h) | 24.56 mph (39.52 km/h) |
| 30 mph (48.28 km/h) | 29.47 mph (47.43 km/h) |
| 35 mph (56.33 km/h) | 34.38 mph (55.33 km/h) |
| 40 mph (64.37 km/h) | 39.29 mph (63.24 km/h) |
| 45 mph (72.42 km/h) | 44.21 mph (71.14 km/h) |
| 50 mph (80.47 km/h) | 49.12 mph (79.05 km/h) |
| 55 mph (88.51 km/h) | 54.03 mph (86.95 km/h) |
| 60 mph (96.56 km/h) | 58.94 mph (94.86 km/h) |
| 65 mph (104.61 km/h) | 63.85 mph (102.76 km/h) |
| 70 mph (112.65 km/h) | 68.77 mph (110.67 km/h) |
| 75 mph (120.7 km/h) | 73.68 mph (118.57 km/h) |
| 80 mph (128.75 km/h) | 78.59 mph (126.48 km/h) |
| 85 mph (136.79 km/h) | 83.5 mph (134.38 km/h) |
| 90 mph (144.84 km/h) | 88.41 mph (142.29 km/h) |
| 95 mph (152.89 km/h) | 93.33 mph (150.19 km/h) |
| 100 mph (160.93 km/h) | 98.24 mph (158.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2127 | 2471 | 2661 | 2778 | 2905 | 2995 | 3095 | 3213 | 3375 | 3538 | 3719 | 3864 | 4127 | 4416 | 4642 | 4787 | 4869 | 5167 | 5584 | 6489 |
Better Fuel Economy Factory Ratios Increased Power
